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Finding the Fourth Proportional to 92,570.31, 138,750.51 and 39,229.11

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Solution

The fourth proportional to 92,570.31, 138,750.51 and 39,229.11 is: 58,799.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,570.31 : 138,750.51 = 39,229.11 : x
  2. Step 2: Convert to fraction form
    92,570.31/138,750.51 = 39,229.11/x
  3. Step 3: Cross multiply
    92,570.31x = 138,750.51 × 39,229.11
  4. Step 4: Simplify right side
    92,570.31x = 5,443,059,019.35
  5. Step 5: Solve for x
    x = 5,443,059,019.35/92,570.31
  6. Step 6: Final answer
    x = 58,799.19

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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.