Home / 80,720.22-121,049.61-36,913.50

Finding the Fourth Proportional to 80,720.22, 121,049.61 and 36,913.50

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Solution

The fourth proportional to 80,720.22, 121,049.61 and 36,913.50 is: 55,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,720.22 : 121,049.61 = 36,913.50 : x
  2. Step 2: Convert to fraction form
    80,720.22/121,049.61 = 36,913.50/x
  3. Step 3: Cross multiply
    80,720.22x = 121,049.61 × 36,913.50
  4. Step 4: Simplify right side
    80,720.22x = 4,468,364,778.74
  5. Step 5: Solve for x
    x = 4,468,364,778.74/80,720.22
  6. Step 6: Final answer
    x = 55,356.20

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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.