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Finding the Fourth Proportional to 71,986.64, 107,980.68 and 25,240.64

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Solution

The fourth proportional to 71,986.64, 107,980.68 and 25,240.64 is: 37,861.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,986.64 : 107,980.68 = 25,240.64 : x
  2. Step 2: Convert to fraction form
    71,986.64/107,980.68 = 25,240.64/x
  3. Step 3: Cross multiply
    71,986.64x = 107,980.68 × 25,240.64
  4. Step 4: Simplify right side
    71,986.64x = 2,725,501,470.84
  5. Step 5: Solve for x
    x = 2,725,501,470.84/71,986.64
  6. Step 6: Final answer
    x = 37,861.21

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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.