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Finding the Fourth Proportional to 88,193.81, 121,704.65 and 49,956.88

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Solution

The fourth proportional to 88,193.81, 121,704.65 and 49,956.88 is: 68,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,193.81 : 121,704.65 = 49,956.88 : x
  2. Step 2: Convert to fraction form
    88,193.81/121,704.65 = 49,956.88/x
  3. Step 3: Cross multiply
    88,193.81x = 121,704.65 × 49,956.88
  4. Step 4: Simplify right side
    88,193.81x = 6,079,984,041.45
  5. Step 5: Solve for x
    x = 6,079,984,041.45/88,193.81
  6. Step 6: Final answer
    x = 68,938.90

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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.