Home / 83,719.36-125,578.80-21,389.92

Finding the Fourth Proportional to 83,719.36, 125,578.80 and 21,389.92

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Solution

The fourth proportional to 83,719.36, 125,578.80 and 21,389.92 is: 32,084.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,719.36 : 125,578.80 = 21,389.92 : x
  2. Step 2: Convert to fraction form
    83,719.36/125,578.80 = 21,389.92/x
  3. Step 3: Cross multiply
    83,719.36x = 125,578.80 × 21,389.92
  4. Step 4: Simplify right side
    83,719.36x = 2,686,120,485.70
  5. Step 5: Solve for x
    x = 2,686,120,485.70/83,719.36
  6. Step 6: Final answer
    x = 32,084.82

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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.