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Finding the Fourth Proportional to 89,049.78, 122,888.64 and 49,305.78

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Solution

The fourth proportional to 89,049.78, 122,888.64 and 49,305.78 is: 68,041.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,049.78 : 122,888.64 = 49,305.78 : x
  2. Step 2: Convert to fraction form
    89,049.78/122,888.64 = 49,305.78/x
  3. Step 3: Cross multiply
    89,049.78x = 122,888.64 × 49,305.78
  4. Step 4: Simplify right side
    89,049.78x = 6,059,120,248.34
  5. Step 5: Solve for x
    x = 6,059,120,248.34/89,049.78
  6. Step 6: Final answer
    x = 68,041.95

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1.5x scale

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.