Home / 84,168.48-126,219.78-31,549.26

Finding the Fourth Proportional to 84,168.48, 126,219.78 and 31,549.26

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Solution

The fourth proportional to 84,168.48, 126,219.78 and 31,549.26 is: 47,311.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,168.48 : 126,219.78 = 31,549.26 : x
  2. Step 2: Convert to fraction form
    84,168.48/126,219.78 = 31,549.26/x
  3. Step 3: Cross multiply
    84,168.48x = 126,219.78 × 31,549.26
  4. Step 4: Simplify right side
    84,168.48x = 3,982,140,656.36
  5. Step 5: Solve for x
    x = 3,982,140,656.36/84,168.48
  6. Step 6: Final answer
    x = 47,311.54

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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.