Home / 84,399.30-126,616.77-31,809.24

Finding the Fourth Proportional to 84,399.30, 126,616.77 and 31,809.24

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Solution

The fourth proportional to 84,399.30, 126,616.77 and 31,809.24 is: 47,720.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,399.30 : 126,616.77 = 31,809.24 : x
  2. Step 2: Convert to fraction form
    84,399.30/126,616.77 = 31,809.24/x
  3. Step 3: Cross multiply
    84,399.30x = 126,616.77 × 31,809.24
  4. Step 4: Simplify right side
    84,399.30x = 4,027,583,224.95
  5. Step 5: Solve for x
    x = 4,027,583,224.95/84,399.30
  6. Step 6: Final answer
    x = 47,720.58

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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.