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Finding the Fourth Proportional to 108,312.31, 149,471.01 and 60,565.78

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Solution

The fourth proportional to 108,312.31, 149,471.01 and 60,565.78 is: 83,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,312.31 : 149,471.01 = 60,565.78 : x
  2. Step 2: Convert to fraction form
    108,312.31/149,471.01 = 60,565.78/x
  3. Step 3: Cross multiply
    108,312.31x = 149,471.01 × 60,565.78
  4. Step 4: Simplify right side
    108,312.31x = 9,052,828,308.04
  5. Step 5: Solve for x
    x = 9,052,828,308.04/108,312.31
  6. Step 6: Final answer
    x = 83,580.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.