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Finding the Fourth Proportional to 80,981.44, 111,751.68 and 47,446.72

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Solution

The fourth proportional to 80,981.44, 111,751.68 and 47,446.72 is: 65,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.44 : 111,751.68 = 47,446.72 : x
  2. Step 2: Convert to fraction form
    80,981.44/111,751.68 = 47,446.72/x
  3. Step 3: Cross multiply
    80,981.44x = 111,751.68 × 47,446.72
  4. Step 4: Simplify right side
    80,981.44x = 5,302,250,670.49
  5. Step 5: Solve for x
    x = 5,302,250,670.49/80,981.44
  6. Step 6: Final answer
    x = 65,474.89

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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.