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Finding the Fourth Proportional to 90,763.17, 125,121.86 and 60,084.86

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Solution

The fourth proportional to 90,763.17, 125,121.86 and 60,084.86 is: 82,830.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,763.17 : 125,121.86 = 60,084.86 : x
  2. Step 2: Convert to fraction form
    90,763.17/125,121.86 = 60,084.86/x
  3. Step 3: Cross multiply
    90,763.17x = 125,121.86 × 60,084.86
  4. Step 4: Simplify right side
    90,763.17x = 7,517,929,078.30
  5. Step 5: Solve for x
    x = 7,517,929,078.30/90,763.17
  6. Step 6: Final answer
    x = 82,830.18

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1.5x scale

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.