Home / 68,780.28-103,291.38-67,795.32

Finding the Fourth Proportional to 68,780.28, 103,291.38 and 67,795.32

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Solution

The fourth proportional to 68,780.28, 103,291.38 and 67,795.32 is: 101,812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,780.28 : 103,291.38 = 67,795.32 : x
  2. Step 2: Convert to fraction form
    68,780.28/103,291.38 = 67,795.32/x
  3. Step 3: Cross multiply
    68,780.28x = 103,291.38 × 67,795.32
  4. Step 4: Simplify right side
    68,780.28x = 7,002,672,160.34
  5. Step 5: Solve for x
    x = 7,002,672,160.34/68,780.28
  6. Step 6: Final answer
    x = 101,812.21

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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.