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Finding the Fourth Proportional to 80,885.79, 111,630.75 and 48,630.96

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Solution

The fourth proportional to 80,885.79, 111,630.75 and 48,630.96 is: 67,115.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885.79 : 111,630.75 = 48,630.96 : x
  2. Step 2: Convert to fraction form
    80,885.79/111,630.75 = 48,630.96/x
  3. Step 3: Cross multiply
    80,885.79x = 111,630.75 × 48,630.96
  4. Step 4: Simplify right side
    80,885.79x = 5,428,710,538.02
  5. Step 5: Solve for x
    x = 5,428,710,538.02/80,885.79
  6. Step 6: Final answer
    x = 67,115.75

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1.5x scale

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.