Home / 81,677.76-122,519.88-25,555.56

Finding the Fourth Proportional to 81,677.76, 122,519.88 and 25,555.56

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Solution

The fourth proportional to 81,677.76, 122,519.88 and 25,555.56 is: 38,334.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,677.76 : 122,519.88 = 25,555.56 : x
  2. Step 2: Convert to fraction form
    81,677.76/122,519.88 = 25,555.56/x
  3. Step 3: Cross multiply
    81,677.76x = 122,519.88 × 25,555.56
  4. Step 4: Simplify right side
    81,677.76x = 3,131,064,144.53
  5. Step 5: Solve for x
    x = 3,131,064,144.53/81,677.76
  6. Step 6: Final answer
    x = 38,334.35

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1.5x scale

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.