Home / 68,363.90-102,398.23-66,690.85

Finding the Fourth Proportional to 68,363.90, 102,398.23 and 66,690.85

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Solution

The fourth proportional to 68,363.90, 102,398.23 and 66,690.85 is: 99,892.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,363.90 : 102,398.23 = 66,690.85 : x
  2. Step 2: Convert to fraction form
    68,363.90/102,398.23 = 66,690.85/x
  3. Step 3: Cross multiply
    68,363.90x = 102,398.23 × 66,690.85
  4. Step 4: Simplify right side
    68,363.90x = 6,829,024,257.43
  5. Step 5: Solve for x
    x = 6,829,024,257.43/68,363.90
  6. Step 6: Final answer
    x = 99,892.26

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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.