Home / 80,780.59-121,188.36-24,619.21

Finding the Fourth Proportional to 80,780.59, 121,188.36 and 24,619.21

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Solution

The fourth proportional to 80,780.59, 121,188.36 and 24,619.21 is: 36,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,780.59 : 121,188.36 = 24,619.21 : x
  2. Step 2: Convert to fraction form
    80,780.59/121,188.36 = 24,619.21/x
  3. Step 3: Cross multiply
    80,780.59x = 121,188.36 × 24,619.21
  4. Step 4: Simplify right side
    80,780.59x = 2,983,561,684.40
  5. Step 5: Solve for x
    x = 2,983,561,684.40/80,780.59
  6. Step 6: Final answer
    x = 36,934.14

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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.