Home / 80,781.59-121,189.86-24,620.21

Finding the Fourth Proportional to 80,781.59, 121,189.86 and 24,620.21

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Solution

The fourth proportional to 80,781.59, 121,189.86 and 24,620.21 is: 36,935.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,781.59 : 121,189.86 = 24,620.21 : x
  2. Step 2: Convert to fraction form
    80,781.59/121,189.86 = 24,620.21/x
  3. Step 3: Cross multiply
    80,781.59x = 121,189.86 × 24,620.21
  4. Step 4: Simplify right side
    80,781.59x = 2,983,719,803.07
  5. Step 5: Solve for x
    x = 2,983,719,803.07/80,781.59
  6. Step 6: Final answer
    x = 36,935.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.