Home / 81,255.14-121,897.96-36,885

Finding the Fourth Proportional to 81,255.14, 121,897.96 and 36,885

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Solution

The fourth proportional to 81,255.14, 121,897.96 and 36,885 is: 55,334.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,255.14 : 121,897.96 = 36,885 : x
  2. Step 2: Convert to fraction form
    81,255.14/121,897.96 = 36,885/x
  3. Step 3: Cross multiply
    81,255.14x = 121,897.96 × 36,885
  4. Step 4: Simplify right side
    81,255.14x = 4,496,206,254.60
  5. Step 5: Solve for x
    x = 4,496,206,254.60/81,255.14
  6. Step 6: Final answer
    x = 55,334.42

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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.