Home / 80,720.52-121,079.43-36,315.84

Finding the Fourth Proportional to 80,720.52, 121,079.43 and 36,315.84

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Solution

The fourth proportional to 80,720.52, 121,079.43 and 36,315.84 is: 54,473.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,720.52 : 121,079.43 = 36,315.84 : x
  2. Step 2: Convert to fraction form
    80,720.52/121,079.43 = 36,315.84/x
  3. Step 3: Cross multiply
    80,720.52x = 121,079.43 × 36,315.84
  4. Step 4: Simplify right side
    80,720.52x = 4,397,101,207.17
  5. Step 5: Solve for x
    x = 4,397,101,207.17/80,720.52
  6. Step 6: Final answer
    x = 54,473.15

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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.