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Finding the Fourth Proportional to 40,322.60, 60,411.90 and 19,500.20

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Solution

The fourth proportional to 40,322.60, 60,411.90 and 19,500.20 is: 29,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,322.60 : 60,411.90 = 19,500.20 : x
  2. Step 2: Convert to fraction form
    40,322.60/60,411.90 = 19,500.20/x
  3. Step 3: Cross multiply
    40,322.60x = 60,411.90 × 19,500.20
  4. Step 4: Simplify right side
    40,322.60x = 1,178,044,132.38
  5. Step 5: Solve for x
    x = 1,178,044,132.38/40,322.60
  6. Step 6: Final answer
    x = 29,215.48

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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.