Home / 71,461.20-107,196.96-18,870

Finding the Fourth Proportional to 71,461.20, 107,196.96 and 18,870

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Solution

The fourth proportional to 71,461.20, 107,196.96 and 18,870 is: 28,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,461.20 : 107,196.96 = 18,870 : x
  2. Step 2: Convert to fraction form
    71,461.20/107,196.96 = 18,870/x
  3. Step 3: Cross multiply
    71,461.20x = 107,196.96 × 18,870
  4. Step 4: Simplify right side
    71,461.20x = 2,022,806,635.20
  5. Step 5: Solve for x
    x = 2,022,806,635.20/71,461.20
  6. Step 6: Final answer
    x = 28,306.36

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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.