Home / 80,962.49-121,337.10-45,423.13

Finding the Fourth Proportional to 80,962.49, 121,337.10 and 45,423.13

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Solution

The fourth proportional to 80,962.49, 121,337.10 and 45,423.13 is: 68,074.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,962.49 : 121,337.10 = 45,423.13 : x
  2. Step 2: Convert to fraction form
    80,962.49/121,337.10 = 45,423.13/x
  3. Step 3: Cross multiply
    80,962.49x = 121,337.10 × 45,423.13
  4. Step 4: Simplify right side
    80,962.49x = 5,511,510,867.12
  5. Step 5: Solve for x
    x = 5,511,510,867.12/80,962.49
  6. Step 6: Final answer
    x = 68,074.87

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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.