Home / 81,639.44-112,660.77-45,338.97

Finding the Fourth Proportional to 81,639.44, 112,660.77 and 45,338.97

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Solution

The fourth proportional to 81,639.44, 112,660.77 and 45,338.97 is: 62,566.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,639.44 : 112,660.77 = 45,338.97 : x
  2. Step 2: Convert to fraction form
    81,639.44/112,660.77 = 45,338.97/x
  3. Step 3: Cross multiply
    81,639.44x = 112,660.77 × 45,338.97
  4. Step 4: Simplify right side
    81,639.44x = 5,107,923,271.21
  5. Step 5: Solve for x
    x = 5,107,923,271.21/81,639.44
  6. Step 6: Final answer
    x = 62,566.86

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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.