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Finding the Fourth Proportional to 88,178.79, 121,687.61 and 47,892.93

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Solution

The fourth proportional to 88,178.79, 121,687.61 and 47,892.93 is: 66,092.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,178.79 : 121,687.61 = 47,892.93 : x
  2. Step 2: Convert to fraction form
    88,178.79/121,687.61 = 47,892.93/x
  3. Step 3: Cross multiply
    88,178.79x = 121,687.61 × 47,892.93
  4. Step 4: Simplify right side
    88,178.79x = 5,827,976,187.60
  5. Step 5: Solve for x
    x = 5,827,976,187.60/88,178.79
  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.