Home / 81,225.12-112,105.20-48,965.52

Finding the Fourth Proportional to 81,225.12, 112,105.20 and 48,965.52

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Solution

The fourth proportional to 81,225.12, 112,105.20 and 48,965.52 is: 67,581.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,225.12 : 112,105.20 = 48,965.52 : x
  2. Step 2: Convert to fraction form
    81,225.12/112,105.20 = 48,965.52/x
  3. Step 3: Cross multiply
    81,225.12x = 112,105.20 × 48,965.52
  4. Step 4: Simplify right side
    81,225.12x = 5,489,289,412.70
  5. Step 5: Solve for x
    x = 5,489,289,412.70/81,225.12
  6. Step 6: Final answer
    x = 67,581.18

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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.