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Finding the Fourth Proportional to 71,351.90, 107,018.59 and 26,972.87

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Solution

The fourth proportional to 71,351.90, 107,018.59 and 26,972.87 is: 40,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,351.90 : 107,018.59 = 26,972.87 : x
  2. Step 2: Convert to fraction form
    71,351.90/107,018.59 = 26,972.87/x
  3. Step 3: Cross multiply
    71,351.90x = 107,018.59 × 26,972.87
  4. Step 4: Simplify right side
    71,351.90x = 2,886,598,515.65
  5. Step 5: Solve for x
    x = 2,886,598,515.65/71,351.90
  6. Step 6: Final answer
    x = 40,455.80

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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.