Home / 68,505.74-102,765.45-18,586.66

Finding the Fourth Proportional to 68,505.74, 102,765.45 and 18,586.66

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Solution

The fourth proportional to 68,505.74, 102,765.45 and 18,586.66 is: 27,881.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,505.74 : 102,765.45 = 18,586.66 : x
  2. Step 2: Convert to fraction form
    68,505.74/102,765.45 = 18,586.66/x
  3. Step 3: Cross multiply
    68,505.74x = 102,765.45 × 18,586.66
  4. Step 4: Simplify right side
    68,505.74x = 1,910,066,478.90
  5. Step 5: Solve for x
    x = 1,910,066,478.90/68,505.74
  6. Step 6: Final answer
    x = 27,881.85

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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.