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Finding the Fourth Proportional to 57,700.29, 86,588.29 and 20,259.39

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Solution

The fourth proportional to 57,700.29, 86,588.29 and 20,259.39 is: 30,402.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,700.29 : 86,588.29 = 20,259.39 : x
  2. Step 2: Convert to fraction form
    57,700.29/86,588.29 = 20,259.39/x
  3. Step 3: Cross multiply
    57,700.29x = 86,588.29 × 20,259.39
  4. Step 4: Simplify right side
    57,700.29x = 1,754,226,286.57
  5. Step 5: Solve for x
    x = 1,754,226,286.57/57,700.29
  6. Step 6: Final answer
    x = 30,402.38

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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.