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Finding the Fourth Proportional to 71,663.13, 107,493.80 and 43,590.87

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Solution

The fourth proportional to 71,663.13, 107,493.80 and 43,590.87 is: 65,385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.13 : 107,493.80 = 43,590.87 : x
  2. Step 2: Convert to fraction form
    71,663.13/107,493.80 = 43,590.87/x
  3. Step 3: Cross multiply
    71,663.13x = 107,493.80 × 43,590.87
  4. Step 4: Simplify right side
    71,663.13x = 4,685,748,043.65
  5. Step 5: Solve for x
    x = 4,685,748,043.65/71,663.13
  6. Step 6: Final answer
    x = 65,385.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.