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Finding the Fourth Proportional to 72,663, 109,001.16 and 25,286.52

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Solution

The fourth proportional to 72,663, 109,001.16 and 25,286.52 is: 37,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,663 : 109,001.16 = 25,286.52 : x
  2. Step 2: Convert to fraction form
    72,663/109,001.16 = 25,286.52/x
  3. Step 3: Cross multiply
    72,663x = 109,001.16 × 25,286.52
  4. Step 4: Simplify right side
    72,663x = 2,756,260,012.36
  5. Step 5: Solve for x
    x = 2,756,260,012.36/72,663
  6. Step 6: Final answer
    x = 37,932.10

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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.