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Finding the Fourth Proportional to 89,945, 124,120.84 and 49,657.92

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Solution

The fourth proportional to 89,945, 124,120.84 and 49,657.92 is: 68,526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,945 : 124,120.84 = 49,657.92 : x
  2. Step 2: Convert to fraction form
    89,945/124,120.84 = 49,657.92/x
  3. Step 3: Cross multiply
    89,945x = 124,120.84 × 49,657.92
  4. Step 4: Simplify right side
    89,945x = 6,163,582,743.05
  5. Step 5: Solve for x
    x = 6,163,582,743.05/89,945
  6. Step 6: Final answer
    x = 68,526.13

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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.