Home / 68,961.20-103,466.10-66,531.20

Finding the Fourth Proportional to 68,961.20, 103,466.10 and 66,531.20

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Solution

The fourth proportional to 68,961.20, 103,466.10 and 66,531.20 is: 99,820.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,961.20 : 103,466.10 = 66,531.20 : x
  2. Step 2: Convert to fraction form
    68,961.20/103,466.10 = 66,531.20/x
  3. Step 3: Cross multiply
    68,961.20x = 103,466.10 × 66,531.20
  4. Step 4: Simplify right side
    68,961.20x = 6,883,723,792.32
  5. Step 5: Solve for x
    x = 6,883,723,792.32/68,961.20
  6. Step 6: Final answer
    x = 99,820.24

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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.