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Finding the Fourth Proportional to 68,363.37, 102,397.43 and 66,690.32

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Solution

The fourth proportional to 68,363.37, 102,397.43 and 66,690.32 is: 99,891.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,363.37 : 102,397.43 = 66,690.32 : x
  2. Step 2: Convert to fraction form
    68,363.37/102,397.43 = 66,690.32/x
  3. Step 3: Cross multiply
    68,363.37x = 102,397.43 × 66,690.32
  4. Step 4: Simplify right side
    68,363.37x = 6,828,916,861.89
  5. Step 5: Solve for x
    x = 6,828,916,861.89/68,363.37
  6. Step 6: Final answer
    x = 99,891.46

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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.