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Finding the Fourth Proportional to 88,178.80, 121,687.60 and 47,892.94

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Solution

The fourth proportional to 88,178.80, 121,687.60 and 47,892.94 is: 66,092.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,178.80 : 121,687.60 = 47,892.94 : x
  2. Step 2: Convert to fraction form
    88,178.80/121,687.60 = 47,892.94/x
  3. Step 3: Cross multiply
    88,178.80x = 121,687.60 × 47,892.94
  4. Step 4: Simplify right side
    88,178.80x = 5,827,976,925.54
  5. Step 5: Solve for x
    x = 5,827,976,925.54/88,178.80
  6. Step 6: Final answer
    x = 66,092.72

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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.