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Finding the Fourth Proportional to 68,610.72, 102,915.84 and 45,066.96

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Solution

The fourth proportional to 68,610.72, 102,915.84 and 45,066.96 is: 67,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,610.72 : 102,915.84 = 45,066.96 : x
  2. Step 2: Convert to fraction form
    68,610.72/102,915.84 = 45,066.96/x
  3. Step 3: Cross multiply
    68,610.72x = 102,915.84 × 45,066.96
  4. Step 4: Simplify right side
    68,610.72x = 4,638,104,044.65
  5. Step 5: Solve for x
    x = 4,638,104,044.65/68,610.72
  6. Step 6: Final answer
    x = 67,600.28

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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.