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Finding the Fourth Proportional to 81,761.52, 112,833.75 and 45,950.80

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Solution

The fourth proportional to 81,761.52, 112,833.75 and 45,950.80 is: 63,413.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,761.52 : 112,833.75 = 45,950.80 : x
  2. Step 2: Convert to fraction form
    81,761.52/112,833.75 = 45,950.80/x
  3. Step 3: Cross multiply
    81,761.52x = 112,833.75 × 45,950.80
  4. Step 4: Simplify right side
    81,761.52x = 5,184,801,079.50
  5. Step 5: Solve for x
    x = 5,184,801,079.50/81,761.52
  6. Step 6: Final answer
    x = 63,413.71

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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.