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Finding the Fourth Proportional to 88,159.79, 121,661.96 and 49,918.33

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Solution

The fourth proportional to 88,159.79, 121,661.96 and 49,918.33 is: 68,888.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,159.79 : 121,661.96 = 49,918.33 : x
  2. Step 2: Convert to fraction form
    88,159.79/121,661.96 = 49,918.33/x
  3. Step 3: Cross multiply
    88,159.79x = 121,661.96 × 49,918.33
  4. Step 4: Simplify right side
    88,159.79x = 6,073,161,009.83
  5. Step 5: Solve for x
    x = 6,073,161,009.83/88,159.79
  6. Step 6: Final answer
    x = 68,888.11

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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.