Home / 109,013.87-163,421.78-38,876.78

Finding the Fourth Proportional to 109,013.87, 163,421.78 and 38,876.78

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Solution

The fourth proportional to 109,013.87, 163,421.78 and 38,876.78 is: 58,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,013.87 : 163,421.78 = 38,876.78 : x
  2. Step 2: Convert to fraction form
    109,013.87/163,421.78 = 38,876.78/x
  3. Step 3: Cross multiply
    109,013.87x = 163,421.78 × 38,876.78
  4. Step 4: Simplify right side
    109,013.87x = 6,353,311,576.78
  5. Step 5: Solve for x
    x = 6,353,311,576.78/109,013.87
  6. Step 6: Final answer
    x = 58,279.85

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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.