Home / 81,479.42-112,441.24-45,669.43

Finding the Fourth Proportional to 81,479.42, 112,441.24 and 45,669.43

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Solution

The fourth proportional to 81,479.42, 112,441.24 and 45,669.43 is: 63,023.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.42 : 112,441.24 = 45,669.43 : x
  2. Step 2: Convert to fraction form
    81,479.42/112,441.24 = 45,669.43/x
  3. Step 3: Cross multiply
    81,479.42x = 112,441.24 × 45,669.43
  4. Step 4: Simplify right side
    81,479.42x = 5,135,127,339.29
  5. Step 5: Solve for x
    x = 5,135,127,339.29/81,479.42
  6. Step 6: Final answer
    x = 63,023.61

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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.