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Finding the Fourth Proportional to 88,120, 121,604.40 and 47,833.84

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Solution

The fourth proportional to 88,120, 121,604.40 and 47,833.84 is: 66,010.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,120 : 121,604.40 = 47,833.84 : x
  2. Step 2: Convert to fraction form
    88,120/121,604.40 = 47,833.84/x
  3. Step 3: Cross multiply
    88,120x = 121,604.40 × 47,833.84
  4. Step 4: Simplify right side
    88,120x = 5,816,805,412.90
  5. Step 5: Solve for x
    x = 5,816,805,412.90/88,120
  6. Step 6: Final answer
    x = 66,010.05

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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.