Home / 90,691.42-125,158.38-50,405.84

Finding the Fourth Proportional to 90,691.42, 125,158.38 and 50,405.84

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Solution

The fourth proportional to 90,691.42, 125,158.38 and 50,405.84 is: 69,562.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,691.42 : 125,158.38 = 50,405.84 : x
  2. Step 2: Convert to fraction form
    90,691.42/125,158.38 = 50,405.84/x
  3. Step 3: Cross multiply
    90,691.42x = 125,158.38 × 50,405.84
  4. Step 4: Simplify right side
    90,691.42x = 6,308,713,276.94
  5. Step 5: Solve for x
    x = 6,308,713,276.94/90,691.42
  6. Step 6: Final answer
    x = 69,562.41

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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.