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Finding the Fourth Proportional to 40,437.20, 60,647.70 and 19,377.20

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Solution

The fourth proportional to 40,437.20, 60,647.70 and 19,377.20 is: 29,061.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,437.20 : 60,647.70 = 19,377.20 : x
  2. Step 2: Convert to fraction form
    40,437.20/60,647.70 = 19,377.20/x
  3. Step 3: Cross multiply
    40,437.20x = 60,647.70 × 19,377.20
  4. Step 4: Simplify right side
    40,437.20x = 1,175,182,612.44
  5. Step 5: Solve for x
    x = 1,175,182,612.44/40,437.20
  6. Step 6: Final answer
    x = 29,061.92

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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.