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Finding the Fourth Proportional to 80,697.72, 111,364.08 and 48,869.64

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Solution

The fourth proportional to 80,697.72, 111,364.08 and 48,869.64 is: 67,440.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,697.72 : 111,364.08 = 48,869.64 : x
  2. Step 2: Convert to fraction form
    80,697.72/111,364.08 = 48,869.64/x
  3. Step 3: Cross multiply
    80,697.72x = 111,364.08 × 48,869.64
  4. Step 4: Simplify right side
    80,697.72x = 5,442,322,498.53
  5. Step 5: Solve for x
    x = 5,442,322,498.53/80,697.72
  6. Step 6: Final answer
    x = 67,440.85

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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.