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Finding the Fourth Proportional to 40,240.40, 60,367.80 and 16,869.20

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Solution

The fourth proportional to 40,240.40, 60,367.80 and 16,869.20 is: 25,306.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,240.40 : 60,367.80 = 16,869.20 : x
  2. Step 2: Convert to fraction form
    40,240.40/60,367.80 = 16,869.20/x
  3. Step 3: Cross multiply
    40,240.40x = 60,367.80 × 16,869.20
  4. Step 4: Simplify right side
    40,240.40x = 1,018,356,491.76
  5. Step 5: Solve for x
    x = 1,018,356,491.76/40,240.40
  6. Step 6: Final answer
    x = 25,306.82

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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.