Home / 89,788.45-123,908.93-49,503.78

Finding the Fourth Proportional to 89,788.45, 123,908.93 and 49,503.78

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Solution

The fourth proportional to 89,788.45, 123,908.93 and 49,503.78 is: 68,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,788.45 : 123,908.93 = 49,503.78 : x
  2. Step 2: Convert to fraction form
    89,788.45/123,908.93 = 49,503.78/x
  3. Step 3: Cross multiply
    89,788.45x = 123,908.93 × 49,503.78
  4. Step 4: Simplify right side
    89,788.45x = 6,133,960,410.76
  5. Step 5: Solve for x
    x = 6,133,960,410.76/89,788.45
  6. Step 6: Final answer
    x = 68,315.70

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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.