Home / 81,675.92-122,456.28-31,714.40

Finding the Fourth Proportional to 81,675.92, 122,456.28 and 31,714.40

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Solution

The fourth proportional to 81,675.92, 122,456.28 and 31,714.40 is: 47,549.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,675.92 : 122,456.28 = 31,714.40 : x
  2. Step 2: Convert to fraction form
    81,675.92/122,456.28 = 31,714.40/x
  3. Step 3: Cross multiply
    81,675.92x = 122,456.28 × 31,714.40
  4. Step 4: Simplify right side
    81,675.92x = 3,883,627,446.43
  5. Step 5: Solve for x
    x = 3,883,627,446.43/81,675.92
  6. Step 6: Final answer
    x = 47,549.23

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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.