Home / 81,839.97-112,944.38-51,208.20

Finding the Fourth Proportional to 81,839.97, 112,944.38 and 51,208.20

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Solution

The fourth proportional to 81,839.97, 112,944.38 and 51,208.20 is: 70,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,839.97 : 112,944.38 = 51,208.20 : x
  2. Step 2: Convert to fraction form
    81,839.97/112,944.38 = 51,208.20/x
  3. Step 3: Cross multiply
    81,839.97x = 112,944.38 × 51,208.20
  4. Step 4: Simplify right side
    81,839.97x = 5,783,678,143.88
  5. Step 5: Solve for x
    x = 5,783,678,143.88/81,839.97
  6. Step 6: Final answer
    x = 70,670.58

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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.