Home / 80,772.28-121,213.77-28,181.76

Finding the Fourth Proportional to 80,772.28, 121,213.77 and 28,181.76

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Solution

The fourth proportional to 80,772.28, 121,213.77 and 28,181.76 is: 42,291.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.28 : 121,213.77 = 28,181.76 : x
  2. Step 2: Convert to fraction form
    80,772.28/121,213.77 = 28,181.76/x
  3. Step 3: Cross multiply
    80,772.28x = 121,213.77 × 28,181.76
  4. Step 4: Simplify right side
    80,772.28x = 3,416,017,374.84
  5. Step 5: Solve for x
    x = 3,416,017,374.84/80,772.28
  6. Step 6: Final answer
    x = 42,291.95

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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.