Home / 90,414.90-124,772.60-50,129.15

Finding the Fourth Proportional to 90,414.90, 124,772.60 and 50,129.15

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Solution

The fourth proportional to 90,414.90, 124,772.60 and 50,129.15 is: 69,178.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,414.90 : 124,772.60 = 50,129.15 : x
  2. Step 2: Convert to fraction form
    90,414.90/124,772.60 = 50,129.15/x
  3. Step 3: Cross multiply
    90,414.90x = 124,772.60 × 50,129.15
  4. Step 4: Simplify right side
    90,414.90x = 6,254,743,882.75
  5. Step 5: Solve for x
    x = 6,254,743,882.75/90,414.90
  6. Step 6: Final answer
    x = 69,178.24

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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.