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Finding the Fourth Proportional to 88,105.74, 121,585.86 and 49,864.58

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Solution

The fourth proportional to 88,105.74, 121,585.86 and 49,864.58 is: 68,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,105.74 : 121,585.86 = 49,864.58 : x
  2. Step 2: Convert to fraction form
    88,105.74/121,585.86 = 49,864.58/x
  3. Step 3: Cross multiply
    88,105.74x = 121,585.86 × 49,864.58
  4. Step 4: Simplify right side
    88,105.74x = 6,062,827,842.84
  5. Step 5: Solve for x
    x = 6,062,827,842.84/88,105.74
  6. Step 6: Final answer
    x = 68,813.09

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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.