Home / 81,231.12-112,099.68-45,423.24

Finding the Fourth Proportional to 81,231.12, 112,099.68 and 45,423.24

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Solution

The fourth proportional to 81,231.12, 112,099.68 and 45,423.24 is: 62,684.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,231.12 : 112,099.68 = 45,423.24 : x
  2. Step 2: Convert to fraction form
    81,231.12/112,099.68 = 45,423.24/x
  3. Step 3: Cross multiply
    81,231.12x = 112,099.68 × 45,423.24
  4. Step 4: Simplify right side
    81,231.12x = 5,091,930,668.56
  5. Step 5: Solve for x
    x = 5,091,930,668.56/81,231.12
  6. Step 6: Final answer
    x = 62,684.48

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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.