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Finding the Fourth Proportional to 72,354.65, 108,569.02 and 34,446.80

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Solution

The fourth proportional to 72,354.65, 108,569.02 and 34,446.80 is: 51,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,354.65 : 108,569.02 = 34,446.80 : x
  2. Step 2: Convert to fraction form
    72,354.65/108,569.02 = 34,446.80/x
  3. Step 3: Cross multiply
    72,354.65x = 108,569.02 × 34,446.80
  4. Step 4: Simplify right side
    72,354.65x = 3,739,855,145.90
  5. Step 5: Solve for x
    x = 3,739,855,145.90/72,354.65
  6. Step 6: Final answer
    x = 51,687.83

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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.