Home / 80,719.68-121,079.52-25,320

Finding the Fourth Proportional to 80,719.68, 121,079.52 and 25,320

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Solution

The fourth proportional to 80,719.68, 121,079.52 and 25,320 is: 37,980.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.68 : 121,079.52 = 25,320 : x
  2. Step 2: Convert to fraction form
    80,719.68/121,079.52 = 25,320/x
  3. Step 3: Cross multiply
    80,719.68x = 121,079.52 × 25,320
  4. Step 4: Simplify right side
    80,719.68x = 3,065,733,446.40
  5. Step 5: Solve for x
    x = 3,065,733,446.40/80,719.68
  6. Step 6: Final answer
    x = 37,980.00

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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.