Home / 80,785.40-121,105.20-52,718.90

Finding the Fourth Proportional to 80,785.40, 121,105.20 and 52,718.90

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Solution

The fourth proportional to 80,785.40, 121,105.20 and 52,718.90 is: 79,030.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,785.40 : 121,105.20 = 52,718.90 : x
  2. Step 2: Convert to fraction form
    80,785.40/121,105.20 = 52,718.90/x
  3. Step 3: Cross multiply
    80,785.40x = 121,105.20 × 52,718.90
  4. Step 4: Simplify right side
    80,785.40x = 6,384,532,928.28
  5. Step 5: Solve for x
    x = 6,384,532,928.28/80,785.40
  6. Step 6: Final answer
    x = 79,030.78

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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.