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Finding the Fourth Proportional to 40,139.84, 60,127.84 and 18,267.20

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Solution

The fourth proportional to 40,139.84, 60,127.84 and 18,267.20 is: 27,363.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,139.84 : 60,127.84 = 18,267.20 : x
  2. Step 2: Convert to fraction form
    40,139.84/60,127.84 = 18,267.20/x
  3. Step 3: Cross multiply
    40,139.84x = 60,127.84 × 18,267.20
  4. Step 4: Simplify right side
    40,139.84x = 1,098,367,278.85
  5. Step 5: Solve for x
    x = 1,098,367,278.85/40,139.84
  6. Step 6: Final answer
    x = 27,363.52

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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.