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Finding the Fourth Proportional to 71,374.58, 98,495.56 and 39,543.74

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Solution

The fourth proportional to 71,374.58, 98,495.56 and 39,543.74 is: 54,569.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,374.58 : 98,495.56 = 39,543.74 : x
  2. Step 2: Convert to fraction form
    71,374.58/98,495.56 = 39,543.74/x
  3. Step 3: Cross multiply
    71,374.58x = 98,495.56 × 39,543.74
  4. Step 4: Simplify right side
    71,374.58x = 3,894,882,815.79
  5. Step 5: Solve for x
    x = 3,894,882,815.79/71,374.58
  6. Step 6: Final answer
    x = 54,569.61

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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.