Home / 80,528.45-111,121.13-47,013.89

Finding the Fourth Proportional to 80,528.45, 111,121.13 and 47,013.89

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Solution

The fourth proportional to 80,528.45, 111,121.13 and 47,013.89 is: 64,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,528.45 : 111,121.13 = 47,013.89 : x
  2. Step 2: Convert to fraction form
    80,528.45/111,121.13 = 47,013.89/x
  3. Step 3: Cross multiply
    80,528.45x = 111,121.13 × 47,013.89
  4. Step 4: Simplify right side
    80,528.45x = 5,224,236,144.42
  5. Step 5: Solve for x
    x = 5,224,236,144.42/80,528.45
  6. Step 6: Final answer
    x = 64,874.42

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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.