Home / 84,564.20-126,757.74-28,390.52

Finding the Fourth Proportional to 84,564.20, 126,757.74 and 28,390.52

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Solution

The fourth proportional to 84,564.20, 126,757.74 and 28,390.52 is: 42,556.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,564.20 : 126,757.74 = 28,390.52 : x
  2. Step 2: Convert to fraction form
    84,564.20/126,757.74 = 28,390.52/x
  3. Step 3: Cross multiply
    84,564.20x = 126,757.74 × 28,390.52
  4. Step 4: Simplify right side
    84,564.20x = 3,598,718,152.62
  5. Step 5: Solve for x
    x = 3,598,718,152.62/84,564.20
  6. Step 6: Final answer
    x = 42,556.05

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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.