Home / 81,029.28-121,573.08-28,446.96

Finding the Fourth Proportional to 81,029.28, 121,573.08 and 28,446.96

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Solution

The fourth proportional to 81,029.28, 121,573.08 and 28,446.96 is: 42,680.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.28 : 121,573.08 = 28,446.96 : x
  2. Step 2: Convert to fraction form
    81,029.28/121,573.08 = 28,446.96/x
  3. Step 3: Cross multiply
    81,029.28x = 121,573.08 × 28,446.96
  4. Step 4: Simplify right side
    81,029.28x = 3,458,384,543.84
  5. Step 5: Solve for x
    x = 3,458,384,543.84/81,029.28
  6. Step 6: Final answer
    x = 42,680.68

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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.