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Finding the Fourth Proportional to 72,350.80, 99,819.11 and 45,495.35

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Solution

The fourth proportional to 72,350.80, 99,819.11 and 45,495.35 is: 62,767.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,350.80 : 99,819.11 = 45,495.35 : x
  2. Step 2: Convert to fraction form
    72,350.80/99,819.11 = 45,495.35/x
  3. Step 3: Cross multiply
    72,350.80x = 99,819.11 × 45,495.35
  4. Step 4: Simplify right side
    72,350.80x = 4,541,305,346.14
  5. Step 5: Solve for x
    x = 4,541,305,346.14/72,350.80
  6. Step 6: Final answer
    x = 62,767.87

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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.