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Finding the Fourth Proportional to 51,287.40, 70,808.60 and 33,147.61

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Solution

The fourth proportional to 51,287.40, 70,808.60 and 33,147.61 is: 45,764.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,287.40 : 70,808.60 = 33,147.61 : x
  2. Step 2: Convert to fraction form
    51,287.40/70,808.60 = 33,147.61/x
  3. Step 3: Cross multiply
    51,287.40x = 70,808.60 × 33,147.61
  4. Step 4: Simplify right side
    51,287.40x = 2,347,135,763.29
  5. Step 5: Solve for x
    x = 2,347,135,763.29/51,287.40
  6. Step 6: Final answer
    x = 45,764.37

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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.