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Finding the Fourth Proportional to 71,445.54, 98,598 and 39,612.42

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Solution

The fourth proportional to 71,445.54, 98,598 and 39,612.42 is: 54,666.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,445.54 : 98,598 = 39,612.42 : x
  2. Step 2: Convert to fraction form
    71,445.54/98,598 = 39,612.42/x
  3. Step 3: Cross multiply
    71,445.54x = 98,598 × 39,612.42
  4. Step 4: Simplify right side
    71,445.54x = 3,905,705,387.16
  5. Step 5: Solve for x
    x = 3,905,705,387.16/71,445.54
  6. Step 6: Final answer
    x = 54,666.89

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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.