Home / 81,721.61-112,775.13-45,910.85

Finding the Fourth Proportional to 81,721.61, 112,775.13 and 45,910.85

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Solution

The fourth proportional to 81,721.61, 112,775.13 and 45,910.85 is: 63,356.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.61 : 112,775.13 = 45,910.85 : x
  2. Step 2: Convert to fraction form
    81,721.61/112,775.13 = 45,910.85/x
  3. Step 3: Cross multiply
    81,721.61x = 112,775.13 × 45,910.85
  4. Step 4: Simplify right side
    81,721.61x = 5,177,601,513.28
  5. Step 5: Solve for x
    x = 5,177,601,513.28/81,721.61
  6. Step 6: Final answer
    x = 63,356.58

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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.