Home / 84,219.96-126,287.68-28,040.28

Finding the Fourth Proportional to 84,219.96, 126,287.68 and 28,040.28

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Solution

The fourth proportional to 84,219.96, 126,287.68 and 28,040.28 is: 42,046.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,219.96 : 126,287.68 = 28,040.28 : x
  2. Step 2: Convert to fraction form
    84,219.96/126,287.68 = 28,040.28/x
  3. Step 3: Cross multiply
    84,219.96x = 126,287.68 × 28,040.28
  4. Step 4: Simplify right side
    84,219.96x = 3,541,141,907.75
  5. Step 5: Solve for x
    x = 3,541,141,907.75/84,219.96
  6. Step 6: Final answer
    x = 42,046.35

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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.