Home / 81,569.46-112,614.12-51,380.66

Finding the Fourth Proportional to 81,569.46, 112,614.12 and 51,380.66

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Solution

The fourth proportional to 81,569.46, 112,614.12 and 51,380.66 is: 70,935.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,569.46 : 112,614.12 = 51,380.66 : x
  2. Step 2: Convert to fraction form
    81,569.46/112,614.12 = 51,380.66/x
  3. Step 3: Cross multiply
    81,569.46x = 112,614.12 × 51,380.66
  4. Step 4: Simplify right side
    81,569.46x = 5,786,187,784.96
  5. Step 5: Solve for x
    x = 5,786,187,784.96/81,569.46
  6. Step 6: Final answer
    x = 70,935.71

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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.