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Finding the Fourth Proportional to 88,165.73, 121,669.53 and 47,879.84

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Solution

The fourth proportional to 88,165.73, 121,669.53 and 47,879.84 is: 66,074.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,165.73 : 121,669.53 = 47,879.84 : x
  2. Step 2: Convert to fraction form
    88,165.73/121,669.53 = 47,879.84/x
  3. Step 3: Cross multiply
    88,165.73x = 121,669.53 × 47,879.84
  4. Step 4: Simplify right side
    88,165.73x = 5,825,517,753.90
  5. Step 5: Solve for x
    x = 5,825,517,753.90/88,165.73
  6. Step 6: Final answer
    x = 66,074.63

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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.