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Finding the Fourth Proportional to 64,363.68, 88,821.74 and 39,213.20

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Solution

The fourth proportional to 64,363.68, 88,821.74 and 39,213.20 is: 54,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,363.68 : 88,821.74 = 39,213.20 : x
  2. Step 2: Convert to fraction form
    64,363.68/88,821.74 = 39,213.20/x
  3. Step 3: Cross multiply
    64,363.68x = 88,821.74 × 39,213.20
  4. Step 4: Simplify right side
    64,363.68x = 3,482,984,654.97
  5. Step 5: Solve for x
    x = 3,482,984,654.97/64,363.68
  6. Step 6: Final answer
    x = 54,114.13

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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.