Home / 80,531.01-111,142.53-48,702.87

Finding the Fourth Proportional to 80,531.01, 111,142.53 and 48,702.87

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Solution

The fourth proportional to 80,531.01, 111,142.53 and 48,702.87 is: 67,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,531.01 : 111,142.53 = 48,702.87 : x
  2. Step 2: Convert to fraction form
    80,531.01/111,142.53 = 48,702.87/x
  3. Step 3: Cross multiply
    80,531.01x = 111,142.53 × 48,702.87
  4. Step 4: Simplify right side
    80,531.01x = 5,412,960,190.06
  5. Step 5: Solve for x
    x = 5,412,960,190.06/80,531.01
  6. Step 6: Final answer
    x = 67,215.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.