Home / 83,106.40-124,645.20-30,488.80

Finding the Fourth Proportional to 83,106.40, 124,645.20 and 30,488.80

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Solution

The fourth proportional to 83,106.40, 124,645.20 and 30,488.80 is: 45,727.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,106.40 : 124,645.20 = 30,488.80 : x
  2. Step 2: Convert to fraction form
    83,106.40/124,645.20 = 30,488.80/x
  3. Step 3: Cross multiply
    83,106.40x = 124,645.20 × 30,488.80
  4. Step 4: Simplify right side
    83,106.40x = 3,800,282,573.76
  5. Step 5: Solve for x
    x = 3,800,282,573.76/83,106.40
  6. Step 6: Final answer
    x = 45,727.92

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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.