Home / 83,742.88-125,618.64-21,413.92

Finding the Fourth Proportional to 83,742.88, 125,618.64 and 21,413.92

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Solution

The fourth proportional to 83,742.88, 125,618.64 and 21,413.92 is: 32,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,742.88 : 125,618.64 = 21,413.92 : x
  2. Step 2: Convert to fraction form
    83,742.88/125,618.64 = 21,413.92/x
  3. Step 3: Cross multiply
    83,742.88x = 125,618.64 × 21,413.92
  4. Step 4: Simplify right side
    83,742.88x = 2,689,987,507.47
  5. Step 5: Solve for x
    x = 2,689,987,507.47/83,742.88
  6. Step 6: Final answer
    x = 32,121.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.