Home / 87,681.53-131,521.08-82,077.95

Finding the Fourth Proportional to 87,681.53, 131,521.08 and 82,077.95

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Solution

The fourth proportional to 87,681.53, 131,521.08 and 82,077.95 is: 123,115.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,681.53 : 131,521.08 = 82,077.95 : x
  2. Step 2: Convert to fraction form
    87,681.53/131,521.08 = 82,077.95/x
  3. Step 3: Cross multiply
    87,681.53x = 131,521.08 × 82,077.95
  4. Step 4: Simplify right side
    87,681.53x = 10,794,980,628.19
  5. Step 5: Solve for x
    x = 10,794,980,628.19/87,681.53
  6. Step 6: Final answer
    x = 123,115.79

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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.