Home / 80,885.52-121,251.48-28,260.72

Finding the Fourth Proportional to 80,885.52, 121,251.48 and 28,260.72

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Solution

The fourth proportional to 80,885.52, 121,251.48 and 28,260.72 is: 42,364.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885.52 : 121,251.48 = 28,260.72 : x
  2. Step 2: Convert to fraction form
    80,885.52/121,251.48 = 28,260.72/x
  3. Step 3: Cross multiply
    80,885.52x = 121,251.48 × 28,260.72
  4. Step 4: Simplify right side
    80,885.52x = 3,426,654,125.87
  5. Step 5: Solve for x
    x = 3,426,654,125.87/80,885.52
  6. Step 6: Final answer
    x = 42,364.25

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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.