Home / 84,142.20-126,216.54-21,811.08

Finding the Fourth Proportional to 84,142.20, 126,216.54 and 21,811.08

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Solution

The fourth proportional to 84,142.20, 126,216.54 and 21,811.08 is: 32,717.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,142.20 : 126,216.54 = 21,811.08 : x
  2. Step 2: Convert to fraction form
    84,142.20/126,216.54 = 21,811.08/x
  3. Step 3: Cross multiply
    84,142.20x = 126,216.54 × 21,811.08
  4. Step 4: Simplify right side
    84,142.20x = 2,752,919,051.26
  5. Step 5: Solve for x
    x = 2,752,919,051.26/84,142.20
  6. Step 6: Final answer
    x = 32,717.46

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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.