Home / 80,937.45-111,439.52-68,814.09

Finding the Fourth Proportional to 80,937.45, 111,439.52 and 68,814.09

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Solution

The fourth proportional to 80,937.45, 111,439.52 and 68,814.09 is: 94,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.45 : 111,439.52 = 68,814.09 : x
  2. Step 2: Convert to fraction form
    80,937.45/111,439.52 = 68,814.09/x
  3. Step 3: Cross multiply
    80,937.45x = 111,439.52 × 68,814.09
  4. Step 4: Simplify right side
    80,937.45x = 7,668,608,814.77
  5. Step 5: Solve for x
    x = 7,668,608,814.77/80,937.45
  6. Step 6: Final answer
    x = 94,747.35

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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.