Home / 84,214.88-126,304.92-31,623.20

Finding the Fourth Proportional to 84,214.88, 126,304.92 and 31,623.20

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Solution

The fourth proportional to 84,214.88, 126,304.92 and 31,623.20 is: 47,428.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,214.88 : 126,304.92 = 31,623.20 : x
  2. Step 2: Convert to fraction form
    84,214.88/126,304.92 = 31,623.20/x
  3. Step 3: Cross multiply
    84,214.88x = 126,304.92 × 31,623.20
  4. Step 4: Simplify right side
    84,214.88x = 3,994,165,746.14
  5. Step 5: Solve for x
    x = 3,994,165,746.14/84,214.88
  6. Step 6: Final answer
    x = 47,428.27

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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.