Home / 81,110.79-111,930.61-45,299.75

Finding the Fourth Proportional to 81,110.79, 111,930.61 and 45,299.75

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Solution

The fourth proportional to 81,110.79, 111,930.61 and 45,299.75 is: 62,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,110.79 : 111,930.61 = 45,299.75 : x
  2. Step 2: Convert to fraction form
    81,110.79/111,930.61 = 45,299.75/x
  3. Step 3: Cross multiply
    81,110.79x = 111,930.61 × 45,299.75
  4. Step 4: Simplify right side
    81,110.79x = 5,070,428,650.35
  5. Step 5: Solve for x
    x = 5,070,428,650.35/81,110.79
  6. Step 6: Final answer
    x = 62,512.38

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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.