Home / 84,090.44-126,132-20,909.24

Finding the Fourth Proportional to 84,090.44, 126,132 and 20,909.24

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Solution

The fourth proportional to 84,090.44, 126,132 and 20,909.24 is: 31,362.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,090.44 : 126,132 = 20,909.24 : x
  2. Step 2: Convert to fraction form
    84,090.44/126,132 = 20,909.24/x
  3. Step 3: Cross multiply
    84,090.44x = 126,132 × 20,909.24
  4. Step 4: Simplify right side
    84,090.44x = 2,637,324,259.68
  5. Step 5: Solve for x
    x = 2,637,324,259.68/84,090.44
  6. Step 6: Final answer
    x = 31,362.95

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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.