Home / 80,818.40-121,227.64-21,652.56

Finding the Fourth Proportional to 80,818.40, 121,227.64 and 21,652.56

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Solution

The fourth proportional to 80,818.40, 121,227.64 and 21,652.56 is: 32,478.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,818.40 : 121,227.64 = 21,652.56 : x
  2. Step 2: Convert to fraction form
    80,818.40/121,227.64 = 21,652.56/x
  3. Step 3: Cross multiply
    80,818.40x = 121,227.64 × 21,652.56
  4. Step 4: Simplify right side
    80,818.40x = 2,624,888,748.76
  5. Step 5: Solve for x
    x = 2,624,888,748.76/80,818.40
  6. Step 6: Final answer
    x = 32,478.85

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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.