Home / 80,803.68-121,205.76-39,221.52

Finding the Fourth Proportional to 80,803.68, 121,205.76 and 39,221.52

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Solution

The fourth proportional to 80,803.68, 121,205.76 and 39,221.52 is: 58,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,803.68 : 121,205.76 = 39,221.52 : x
  2. Step 2: Convert to fraction form
    80,803.68/121,205.76 = 39,221.52/x
  3. Step 3: Cross multiply
    80,803.68x = 121,205.76 × 39,221.52
  4. Step 4: Simplify right side
    80,803.68x = 4,753,874,139.96
  5. Step 5: Solve for x
    x = 4,753,874,139.96/80,803.68
  6. Step 6: Final answer
    x = 58,832.40

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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.