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Finding the Fourth Proportional to 71,376.84, 98,495.92 and 39,543.84

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Solution

The fourth proportional to 71,376.84, 98,495.92 and 39,543.84 is: 54,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,376.84 : 98,495.92 = 39,543.84 : x
  2. Step 2: Convert to fraction form
    71,376.84/98,495.92 = 39,543.84/x
  3. Step 3: Cross multiply
    71,376.84x = 98,495.92 × 39,543.84
  4. Step 4: Simplify right side
    71,376.84x = 3,894,906,210.93
  5. Step 5: Solve for x
    x = 3,894,906,210.93/71,376.84
  6. Step 6: Final answer
    x = 54,568.21

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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.