Home / 68,744.50-103,132.86-21,357.16

Finding the Fourth Proportional to 68,744.50, 103,132.86 and 21,357.16

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Solution

The fourth proportional to 68,744.50, 103,132.86 and 21,357.16 is: 32,040.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,744.50 : 103,132.86 = 21,357.16 : x
  2. Step 2: Convert to fraction form
    68,744.50/103,132.86 = 21,357.16/x
  3. Step 3: Cross multiply
    68,744.50x = 103,132.86 × 21,357.16
  4. Step 4: Simplify right side
    68,744.50x = 2,202,624,992.28
  5. Step 5: Solve for x
    x = 2,202,624,992.28/68,744.50
  6. Step 6: Final answer
    x = 32,040.74

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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.