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Finding the Fourth Proportional to 71,495.70, 98,659.62 and 39,663.96

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Solution

The fourth proportional to 71,495.70, 98,659.62 and 39,663.96 is: 54,733.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,495.70 : 98,659.62 = 39,663.96 : x
  2. Step 2: Convert to fraction form
    71,495.70/98,659.62 = 39,663.96/x
  3. Step 3: Cross multiply
    71,495.70x = 98,659.62 × 39,663.96
  4. Step 4: Simplify right side
    71,495.70x = 3,913,231,221.30
  5. Step 5: Solve for x
    x = 3,913,231,221.30/71,495.70
  6. Step 6: Final answer
    x = 54,733.80

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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.