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Finding the Fourth Proportional to 71,432.84, 98,581.62 and 39,603.08

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Solution

The fourth proportional to 71,432.84, 98,581.62 and 39,603.08 is: 54,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,432.84 : 98,581.62 = 39,603.08 : x
  2. Step 2: Convert to fraction form
    71,432.84/98,581.62 = 39,603.08/x
  3. Step 3: Cross multiply
    71,432.84x = 98,581.62 × 39,603.08
  4. Step 4: Simplify right side
    71,432.84x = 3,904,135,783.39
  5. Step 5: Solve for x
    x = 3,904,135,783.39/71,432.84
  6. Step 6: Final answer
    x = 54,654.63

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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.