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Finding the Fourth Proportional to 72,537.80, 108,793.87 and 19,230.35

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Solution

The fourth proportional to 72,537.80, 108,793.87 and 19,230.35 is: 28,842.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,537.80 : 108,793.87 = 19,230.35 : x
  2. Step 2: Convert to fraction form
    72,537.80/108,793.87 = 19,230.35/x
  3. Step 3: Cross multiply
    72,537.80x = 108,793.87 × 19,230.35
  4. Step 4: Simplify right side
    72,537.80x = 2,092,143,605.91
  5. Step 5: Solve for x
    x = 2,092,143,605.91/72,537.80
  6. Step 6: Final answer
    x = 28,842.12

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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.