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Finding the Fourth Proportional to 88,364.96, 121,940 and 48,078.88

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Solution

The fourth proportional to 88,364.96, 121,940 and 48,078.88 is: 66,346.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,364.96 : 121,940 = 48,078.88 : x
  2. Step 2: Convert to fraction form
    88,364.96/121,940 = 48,078.88/x
  3. Step 3: Cross multiply
    88,364.96x = 121,940 × 48,078.88
  4. Step 4: Simplify right side
    88,364.96x = 5,862,738,627.20
  5. Step 5: Solve for x
    x = 5,862,738,627.20/88,364.96
  6. Step 6: Final answer
    x = 66,346.87

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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.