Home / 80,720.95-121,080.20-36,316.34

Finding the Fourth Proportional to 80,720.95, 121,080.20 and 36,316.34

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Solution

The fourth proportional to 80,720.95, 121,080.20 and 36,316.34 is: 54,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,720.95 : 121,080.20 = 36,316.34 : x
  2. Step 2: Convert to fraction form
    80,720.95/121,080.20 = 36,316.34/x
  3. Step 3: Cross multiply
    80,720.95x = 121,080.20 × 36,316.34
  4. Step 4: Simplify right side
    80,720.95x = 4,397,189,710.47
  5. Step 5: Solve for x
    x = 4,397,189,710.47/80,720.95
  6. Step 6: Final answer
    x = 54,473.96

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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.