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Finding the Fourth Proportional to 68,912.90, 95,110.10 and 42,071.00

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Solution

The fourth proportional to 68,912.90, 95,110.10 and 42,071.00 is: 58,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,912.90 : 95,110.10 = 42,071.00 : x
  2. Step 2: Convert to fraction form
    68,912.90/95,110.10 = 42,071.00/x
  3. Step 3: Cross multiply
    68,912.90x = 95,110.10 × 42,071.00
  4. Step 4: Simplify right side
    68,912.90x = 4,001,376,488.96
  5. Step 5: Solve for x
    x = 4,001,376,488.96/68,912.90
  6. Step 6: Final answer
    x = 58,064.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.