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Finding the Fourth Proportional to 48,606.20, 72,866.10 and 31,974.20

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Solution

The fourth proportional to 48,606.20, 72,866.10 and 31,974.20 is: 47,932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,606.20 : 72,866.10 = 31,974.20 : x
  2. Step 2: Convert to fraction form
    48,606.20/72,866.10 = 31,974.20/x
  3. Step 3: Cross multiply
    48,606.20x = 72,866.10 × 31,974.20
  4. Step 4: Simplify right side
    48,606.20x = 2,329,835,254.62
  5. Step 5: Solve for x
    x = 2,329,835,254.62/48,606.20
  6. Step 6: Final answer
    x = 47,932.88

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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.