Home / 90,691.17-125,158.04-50,405.59

Finding the Fourth Proportional to 90,691.17, 125,158.04 and 50,405.59

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Solution

The fourth proportional to 90,691.17, 125,158.04 and 50,405.59 is: 69,562.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,691.17 : 125,158.04 = 50,405.59 : x
  2. Step 2: Convert to fraction form
    90,691.17/125,158.04 = 50,405.59/x
  3. Step 3: Cross multiply
    90,691.17x = 125,158.04 × 50,405.59
  4. Step 4: Simplify right side
    90,691.17x = 6,308,664,849.44
  5. Step 5: Solve for x
    x = 6,308,664,849.44/90,691.17
  6. Step 6: Final answer
    x = 69,562.06

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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.