Home / 82,521.66-123,778.35-45,154.74

Finding the Fourth Proportional to 82,521.66, 123,778.35 and 45,154.74

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Solution

The fourth proportional to 82,521.66, 123,778.35 and 45,154.74 is: 67,729.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,521.66 : 123,778.35 = 45,154.74 : x
  2. Step 2: Convert to fraction form
    82,521.66/123,778.35 = 45,154.74/x
  3. Step 3: Cross multiply
    82,521.66x = 123,778.35 × 45,154.74
  4. Step 4: Simplify right side
    82,521.66x = 5,589,179,211.88
  5. Step 5: Solve for x
    x = 5,589,179,211.88/82,521.66
  6. Step 6: Final answer
    x = 67,729.84

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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.