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Finding the Fourth Proportional to 57,502.56, 86,256.28 and 20,066.40

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Solution

The fourth proportional to 57,502.56, 86,256.28 and 20,066.40 is: 30,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,502.56 : 86,256.28 = 20,066.40 : x
  2. Step 2: Convert to fraction form
    57,502.56/86,256.28 = 20,066.40/x
  3. Step 3: Cross multiply
    57,502.56x = 86,256.28 × 20,066.40
  4. Step 4: Simplify right side
    57,502.56x = 1,730,853,016.99
  5. Step 5: Solve for x
    x = 1,730,853,016.99/57,502.56
  6. Step 6: Final answer
    x = 30,100.45

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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.