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Finding the Fourth Proportional to 51,679.75, 71,317.79 and 29,019.09

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Solution

The fourth proportional to 51,679.75, 71,317.79 and 29,019.09 is: 40,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,679.75 : 71,317.79 = 29,019.09 : x
  2. Step 2: Convert to fraction form
    51,679.75/71,317.79 = 29,019.09/x
  3. Step 3: Cross multiply
    51,679.75x = 71,317.79 × 29,019.09
  4. Step 4: Simplify right side
    51,679.75x = 2,069,577,366.61
  5. Step 5: Solve for x
    x = 2,069,577,366.61/51,679.75
  6. Step 6: Final answer
    x = 40,046.20

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1.5x scale

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.