Home / 80,869.22-121,311.14-30,947.30

Finding the Fourth Proportional to 80,869.22, 121,311.14 and 30,947.30

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Solution

The fourth proportional to 80,869.22, 121,311.14 and 30,947.30 is: 46,423.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,869.22 : 121,311.14 = 30,947.30 : x
  2. Step 2: Convert to fraction form
    80,869.22/121,311.14 = 30,947.30/x
  3. Step 3: Cross multiply
    80,869.22x = 121,311.14 × 30,947.30
  4. Step 4: Simplify right side
    80,869.22x = 3,754,252,242.92
  5. Step 5: Solve for x
    x = 3,754,252,242.92/80,869.22
  6. Step 6: Final answer
    x = 46,423.75

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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.