Home / 79,432.34-119,147.70-20,267.38

Finding the Fourth Proportional to 79,432.34, 119,147.70 and 20,267.38

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Solution

The fourth proportional to 79,432.34, 119,147.70 and 20,267.38 is: 30,400.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,432.34 : 119,147.70 = 20,267.38 : x
  2. Step 2: Convert to fraction form
    79,432.34/119,147.70 = 20,267.38/x
  3. Step 3: Cross multiply
    79,432.34x = 119,147.70 × 20,267.38
  4. Step 4: Simplify right side
    79,432.34x = 2,414,811,116.29
  5. Step 5: Solve for x
    x = 2,414,811,116.29/79,432.34
  6. Step 6: Final answer
    x = 30,400.86

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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.