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Finding the Fourth Proportional to 89,707, 123,795.66 and 49,963

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Solution

The fourth proportional to 89,707, 123,795.66 and 49,963 is: 68,948.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,707 : 123,795.66 = 49,963 : x
  2. Step 2: Convert to fraction form
    89,707/123,795.66 = 49,963/x
  3. Step 3: Cross multiply
    89,707x = 123,795.66 × 49,963
  4. Step 4: Simplify right side
    89,707x = 6,185,202,560.58
  5. Step 5: Solve for x
    x = 6,185,202,560.58/89,707
  6. Step 6: Final answer
    x = 68,948.94

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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.