Home / 84,725.08-126,998.94-28,545.78

Finding the Fourth Proportional to 84,725.08, 126,998.94 and 28,545.78

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Solution

The fourth proportional to 84,725.08, 126,998.94 and 28,545.78 is: 42,788.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,725.08 : 126,998.94 = 28,545.78 : x
  2. Step 2: Convert to fraction form
    84,725.08/126,998.94 = 28,545.78/x
  3. Step 3: Cross multiply
    84,725.08x = 126,998.94 × 28,545.78
  4. Step 4: Simplify right side
    84,725.08x = 3,625,283,801.47
  5. Step 5: Solve for x
    x = 3,625,283,801.47/84,725.08
  6. Step 6: Final answer
    x = 42,788.79

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1.5x scale

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.