Home / 81,732.54-112,864.68-51,571.38

Finding the Fourth Proportional to 81,732.54, 112,864.68 and 51,571.38

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Solution

The fourth proportional to 81,732.54, 112,864.68 and 51,571.38 is: 71,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,732.54 : 112,864.68 = 51,571.38 : x
  2. Step 2: Convert to fraction form
    81,732.54/112,864.68 = 51,571.38/x
  3. Step 3: Cross multiply
    81,732.54x = 112,864.68 × 51,571.38
  4. Step 4: Simplify right side
    81,732.54x = 5,820,587,300.86
  5. Step 5: Solve for x
    x = 5,820,587,300.86/81,732.54
  6. Step 6: Final answer
    x = 71,215.05

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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.