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Finding the Fourth Proportional to 80,854.70, 121,282.05 and 73,856.30

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Solution

The fourth proportional to 80,854.70, 121,282.05 and 73,856.30 is: 110,784.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,854.70 : 121,282.05 = 73,856.30 : x
  2. Step 2: Convert to fraction form
    80,854.70/121,282.05 = 73,856.30/x
  3. Step 3: Cross multiply
    80,854.70x = 121,282.05 × 73,856.30
  4. Step 4: Simplify right side
    80,854.70x = 8,957,443,469.42
  5. Step 5: Solve for x
    x = 8,957,443,469.42/80,854.70
  6. Step 6: Final answer
    x = 110,784.45

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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.