Home / 86,154.09-129,231.02-26,994.36

Finding the Fourth Proportional to 86,154.09, 129,231.02 and 26,994.36

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Solution

The fourth proportional to 86,154.09, 129,231.02 and 26,994.36 is: 40,491.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,154.09 : 129,231.02 = 26,994.36 : x
  2. Step 2: Convert to fraction form
    86,154.09/129,231.02 = 26,994.36/x
  3. Step 3: Cross multiply
    86,154.09x = 129,231.02 × 26,994.36
  4. Step 4: Simplify right side
    86,154.09x = 3,488,508,542.08
  5. Step 5: Solve for x
    x = 3,488,508,542.08/86,154.09
  6. Step 6: Final answer
    x = 40,491.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 86,155.09, 129,232.51 and 26,995.36
Similar ratio
Find fourth proportional to 129,231.14, 193,846.52 and 40,491.54
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.