Home / 84,218.88-126,328.32-21,888.96

Finding the Fourth Proportional to 84,218.88, 126,328.32 and 21,888.96

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Solution

The fourth proportional to 84,218.88, 126,328.32 and 21,888.96 is: 32,833.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,218.88 : 126,328.32 = 21,888.96 : x
  2. Step 2: Convert to fraction form
    84,218.88/126,328.32 = 21,888.96/x
  3. Step 3: Cross multiply
    84,218.88x = 126,328.32 × 21,888.96
  4. Step 4: Simplify right side
    84,218.88x = 2,765,195,543.35
  5. Step 5: Solve for x
    x = 2,765,195,543.35/84,218.88
  6. Step 6: Final answer
    x = 32,833.44

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1.5x scale

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.