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Finding the Fourth Proportional to 72,402.36, 108,569.46 and 28,049.88

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Solution

The fourth proportional to 72,402.36, 108,569.46 and 28,049.88 is: 42,061.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,402.36 : 108,569.46 = 28,049.88 : x
  2. Step 2: Convert to fraction form
    72,402.36/108,569.46 = 28,049.88/x
  3. Step 3: Cross multiply
    72,402.36x = 108,569.46 × 28,049.88
  4. Step 4: Simplify right side
    72,402.36x = 3,045,360,324.66
  5. Step 5: Solve for x
    x = 3,045,360,324.66/72,402.36
  6. Step 6: Final answer
    x = 42,061.62

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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.