Home / 78,787.20-108,763.11-50,509.02

Finding the Fourth Proportional to 78,787.20, 108,763.11 and 50,509.02

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Solution

The fourth proportional to 78,787.20, 108,763.11 and 50,509.02 is: 69,726.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.20 : 108,763.11 = 50,509.02 : x
  2. Step 2: Convert to fraction form
    78,787.20/108,763.11 = 50,509.02/x
  3. Step 3: Cross multiply
    78,787.20x = 108,763.11 × 50,509.02
  4. Step 4: Simplify right side
    78,787.20x = 5,493,518,098.25
  5. Step 5: Solve for x
    x = 5,493,518,098.25/78,787.20
  6. Step 6: Final answer
    x = 69,726.02

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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.