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Finding the Fourth Proportional to 71,001.44, 97,981.44 and 39,171.68

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Solution

The fourth proportional to 71,001.44, 97,981.44 and 39,171.68 is: 54,056.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,001.44 : 97,981.44 = 39,171.68 : x
  2. Step 2: Convert to fraction form
    71,001.44/97,981.44 = 39,171.68/x
  3. Step 3: Cross multiply
    71,001.44x = 97,981.44 × 39,171.68
  4. Step 4: Simplify right side
    71,001.44x = 3,838,097,613.62
  5. Step 5: Solve for x
    x = 3,838,097,613.62/71,001.44
  6. Step 6: Final answer
    x = 54,056.62

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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.