Home / 87,242.54-120,364.04-57,045.53

Finding the Fourth Proportional to 87,242.54, 120,364.04 and 57,045.53

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Solution

The fourth proportional to 87,242.54, 120,364.04 and 57,045.53 is: 78,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,242.54 : 120,364.04 = 57,045.53 : x
  2. Step 2: Convert to fraction form
    87,242.54/120,364.04 = 57,045.53/x
  3. Step 3: Cross multiply
    87,242.54x = 120,364.04 × 57,045.53
  4. Step 4: Simplify right side
    87,242.54x = 6,866,230,759.57
  5. Step 5: Solve for x
    x = 6,866,230,759.57/87,242.54
  6. Step 6: Final answer
    x = 78,702.79

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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.