Home / 81,135.60-111,965.94-45,326.12

Finding the Fourth Proportional to 81,135.60, 111,965.94 and 45,326.12

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Solution

The fourth proportional to 81,135.60, 111,965.94 and 45,326.12 is: 62,549.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,135.60 : 111,965.94 = 45,326.12 : x
  2. Step 2: Convert to fraction form
    81,135.60/111,965.94 = 45,326.12/x
  3. Step 3: Cross multiply
    81,135.60x = 111,965.94 × 45,326.12
  4. Step 4: Simplify right side
    81,135.60x = 5,074,981,632.35
  5. Step 5: Solve for x
    x = 5,074,981,632.35/81,135.60
  6. Step 6: Final answer
    x = 62,549.38

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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.