Home / 83,711.10-125,578.80-39,339.30

Finding the Fourth Proportional to 83,711.10, 125,578.80 and 39,339.30

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Solution

The fourth proportional to 83,711.10, 125,578.80 and 39,339.30 is: 59,014.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,711.10 : 125,578.80 = 39,339.30 : x
  2. Step 2: Convert to fraction form
    83,711.10/125,578.80 = 39,339.30/x
  3. Step 3: Cross multiply
    83,711.10x = 125,578.80 × 39,339.30
  4. Step 4: Simplify right side
    83,711.10x = 4,940,182,086.84
  5. Step 5: Solve for x
    x = 4,940,182,086.84/83,711.10
  6. Step 6: Final answer
    x = 59,014.66

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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.