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Finding the Fourth Proportional to 80,871.11, 121,325.13 and 24,719.21

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Solution

The fourth proportional to 80,871.11, 121,325.13 and 24,719.21 is: 37,084.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,871.11 : 121,325.13 = 24,719.21 : x
  2. Step 2: Convert to fraction form
    80,871.11/121,325.13 = 24,719.21/x
  3. Step 3: Cross multiply
    80,871.11x = 121,325.13 × 24,719.21
  4. Step 4: Simplify right side
    80,871.11x = 2,999,061,366.75
  5. Step 5: Solve for x
    x = 2,999,061,366.75/80,871.11
  6. Step 6: Final answer
    x = 37,084.46

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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.