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Finding the Fourth Proportional to 71,899.76, 107,828.52 and 25,143.92

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Solution

The fourth proportional to 71,899.76, 107,828.52 and 25,143.92 is: 37,708.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,899.76 : 107,828.52 = 25,143.92 : x
  2. Step 2: Convert to fraction form
    71,899.76/107,828.52 = 25,143.92/x
  3. Step 3: Cross multiply
    71,899.76x = 107,828.52 × 25,143.92
  4. Step 4: Simplify right side
    71,899.76x = 2,711,231,680.60
  5. Step 5: Solve for x
    x = 2,711,231,680.60/71,899.76
  6. Step 6: Final answer
    x = 37,708.49

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1.5x scale

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.