Home / 78,787.90-108,707.94-50,531.86

Finding the Fourth Proportional to 78,787.90, 108,707.94 and 50,531.86

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Solution

The fourth proportional to 78,787.90, 108,707.94 and 50,531.86 is: 69,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.90 : 108,707.94 = 50,531.86 : x
  2. Step 2: Convert to fraction form
    78,787.90/108,707.94 = 50,531.86/x
  3. Step 3: Cross multiply
    78,787.90x = 108,707.94 × 50,531.86
  4. Step 4: Simplify right side
    78,787.90x = 5,493,214,404.97
  5. Step 5: Solve for x
    x = 5,493,214,404.97/78,787.90
  6. Step 6: Final answer
    x = 69,721.55

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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.