Home / 80,875.71-121,324.89-28,273.23

Finding the Fourth Proportional to 80,875.71, 121,324.89 and 28,273.23

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Solution

The fourth proportional to 80,875.71, 121,324.89 and 28,273.23 is: 42,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,875.71 : 121,324.89 = 28,273.23 : x
  2. Step 2: Convert to fraction form
    80,875.71/121,324.89 = 28,273.23/x
  3. Step 3: Cross multiply
    80,875.71x = 121,324.89 × 28,273.23
  4. Step 4: Simplify right side
    80,875.71x = 3,430,246,519.69
  5. Step 5: Solve for x
    x = 3,430,246,519.69/80,875.71
  6. Step 6: Final answer
    x = 42,413.80

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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.