Home / 86,491.18-129,736-27,326.84

Finding the Fourth Proportional to 86,491.18, 129,736 and 27,326.84

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Solution

The fourth proportional to 86,491.18, 129,736 and 27,326.84 is: 40,990.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,491.18 : 129,736 = 27,326.84 : x
  2. Step 2: Convert to fraction form
    86,491.18/129,736 = 27,326.84/x
  3. Step 3: Cross multiply
    86,491.18x = 129,736 × 27,326.84
  4. Step 4: Simplify right side
    86,491.18x = 3,545,274,914.24
  5. Step 5: Solve for x
    x = 3,545,274,914.24/86,491.18
  6. Step 6: Final answer
    x = 40,990.02

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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.