Home / 52,121.10-71,913.15-30,882.78

Finding the Fourth Proportional to 52,121.10, 71,913.15 and 30,882.78

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Solution

The fourth proportional to 52,121.10, 71,913.15 and 30,882.78 is: 42,609.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,121.10 : 71,913.15 = 30,882.78 : x
  2. Step 2: Convert to fraction form
    52,121.10/71,913.15 = 30,882.78/x
  3. Step 3: Cross multiply
    52,121.10x = 71,913.15 × 30,882.78
  4. Step 4: Simplify right side
    52,121.10x = 2,220,877,990.56
  5. Step 5: Solve for x
    x = 2,220,877,990.56/52,121.10
  6. Step 6: Final answer
    x = 42,609.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.