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Finding the Fourth Proportional to 89,958.88, 124,143.78 and 49,671.88

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Solution

The fourth proportional to 89,958.88, 124,143.78 and 49,671.88 is: 68,547.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,958.88 : 124,143.78 = 49,671.88 : x
  2. Step 2: Convert to fraction form
    89,958.88/124,143.78 = 49,671.88/x
  3. Step 3: Cross multiply
    89,958.88x = 124,143.78 × 49,671.88
  4. Step 4: Simplify right side
    89,958.88x = 6,166,454,942.91
  5. Step 5: Solve for x
    x = 6,166,454,942.91/89,958.88
  6. Step 6: Final answer
    x = 68,547.48

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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.