Home / 83,778.28-125,708.41-39,409.51

Finding the Fourth Proportional to 83,778.28, 125,708.41 and 39,409.51

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Solution

The fourth proportional to 83,778.28, 125,708.41 and 39,409.51 is: 59,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,778.28 : 125,708.41 = 39,409.51 : x
  2. Step 2: Convert to fraction form
    83,778.28/125,708.41 = 39,409.51/x
  3. Step 3: Cross multiply
    83,778.28x = 125,708.41 × 39,409.51
  4. Step 4: Simplify right side
    83,778.28x = 4,954,106,575.97
  5. Step 5: Solve for x
    x = 4,954,106,575.97/83,778.28
  6. Step 6: Final answer
    x = 59,133.55

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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.