Home / 89,788.20-123,902.28-49,503.72

Finding the Fourth Proportional to 89,788.20, 123,902.28 and 49,503.72

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Solution

The fourth proportional to 89,788.20, 123,902.28 and 49,503.72 is: 68,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,788.20 : 123,902.28 = 49,503.72 : x
  2. Step 2: Convert to fraction form
    89,788.20/123,902.28 = 49,503.72/x
  3. Step 3: Cross multiply
    89,788.20x = 123,902.28 × 49,503.72
  4. Step 4: Simplify right side
    89,788.20x = 6,133,623,776.48
  5. Step 5: Solve for x
    x = 6,133,623,776.48/89,788.20
  6. Step 6: Final answer
    x = 68,312.14

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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.