Home / 84,273.76-126,420.36-28,121.32

Finding the Fourth Proportional to 84,273.76, 126,420.36 and 28,121.32

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Solution

The fourth proportional to 84,273.76, 126,420.36 and 28,121.32 is: 42,185.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,273.76 : 126,420.36 = 28,121.32 : x
  2. Step 2: Convert to fraction form
    84,273.76/126,420.36 = 28,121.32/x
  3. Step 3: Cross multiply
    84,273.76x = 126,420.36 × 28,121.32
  4. Step 4: Simplify right side
    84,273.76x = 3,555,107,398.08
  5. Step 5: Solve for x
    x = 3,555,107,398.08/84,273.76
  6. Step 6: Final answer
    x = 42,185.22

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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.