Home / 86,298.36-129,447.54-27,139.20

Finding the Fourth Proportional to 86,298.36, 129,447.54 and 27,139.20

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Solution

The fourth proportional to 86,298.36, 129,447.54 and 27,139.20 is: 40,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,298.36 : 129,447.54 = 27,139.20 : x
  2. Step 2: Convert to fraction form
    86,298.36/129,447.54 = 27,139.20/x
  3. Step 3: Cross multiply
    86,298.36x = 129,447.54 × 27,139.20
  4. Step 4: Simplify right side
    86,298.36x = 3,513,102,677.57
  5. Step 5: Solve for x
    x = 3,513,102,677.57/86,298.36
  6. Step 6: Final answer
    x = 40,708.80

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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.