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Finding the Fourth Proportional to 88,209.16, 121,694.22 and 49,959.88

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Solution

The fourth proportional to 88,209.16, 121,694.22 and 49,959.88 is: 68,925.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,209.16 : 121,694.22 = 49,959.88 : x
  2. Step 2: Convert to fraction form
    88,209.16/121,694.22 = 49,959.88/x
  3. Step 3: Cross multiply
    88,209.16x = 121,694.22 × 49,959.88
  4. Step 4: Simplify right side
    88,209.16x = 6,079,828,627.89
  5. Step 5: Solve for x
    x = 6,079,828,627.89/88,209.16
  6. Step 6: Final answer
    x = 68,925.14

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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.