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Finding the Fourth Proportional to 48,469.80, 72,714.30 and 40,732.20

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Solution

The fourth proportional to 48,469.80, 72,714.30 and 40,732.20 is: 61,106.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,469.80 : 72,714.30 = 40,732.20 : x
  2. Step 2: Convert to fraction form
    48,469.80/72,714.30 = 40,732.20/x
  3. Step 3: Cross multiply
    48,469.80x = 72,714.30 × 40,732.20
  4. Step 4: Simplify right side
    48,469.80x = 2,961,813,410.46
  5. Step 5: Solve for x
    x = 2,961,813,410.46/48,469.80
  6. Step 6: Final answer
    x = 61,106.37

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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.