Home / 81,627.75-122,394.05-31,649.46

Finding the Fourth Proportional to 81,627.75, 122,394.05 and 31,649.46

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Solution

The fourth proportional to 81,627.75, 122,394.05 and 31,649.46 is: 47,455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,627.75 : 122,394.05 = 31,649.46 : x
  2. Step 2: Convert to fraction form
    81,627.75/122,394.05 = 31,649.46/x
  3. Step 3: Cross multiply
    81,627.75x = 122,394.05 × 31,649.46
  4. Step 4: Simplify right side
    81,627.75x = 3,873,705,039.26
  5. Step 5: Solve for x
    x = 3,873,705,039.26/81,627.75
  6. Step 6: Final answer
    x = 47,455.74

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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.