Home / 80,672.40-121,010.16-29,379.12

Finding the Fourth Proportional to 80,672.40, 121,010.16 and 29,379.12

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Solution

The fourth proportional to 80,672.40, 121,010.16 and 29,379.12 is: 44,069.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.40 : 121,010.16 = 29,379.12 : x
  2. Step 2: Convert to fraction form
    80,672.40/121,010.16 = 29,379.12/x
  3. Step 3: Cross multiply
    80,672.40x = 121,010.16 × 29,379.12
  4. Step 4: Simplify right side
    80,672.40x = 3,555,172,011.86
  5. Step 5: Solve for x
    x = 3,555,172,011.86/80,672.40
  6. Step 6: Final answer
    x = 44,069.25

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1.5x scale

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.