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Finding the Fourth Proportional to 75,208.48, 104,262.72 and 71,213.76

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Solution

The fourth proportional to 75,208.48, 104,262.72 and 71,213.76 is: 98,724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,208.48 : 104,262.72 = 71,213.76 : x
  2. Step 2: Convert to fraction form
    75,208.48/104,262.72 = 71,213.76/x
  3. Step 3: Cross multiply
    75,208.48x = 104,262.72 × 71,213.76
  4. Step 4: Simplify right side
    75,208.48x = 7,424,940,319.03
  5. Step 5: Solve for x
    x = 7,424,940,319.03/75,208.48
  6. Step 6: Final answer
    x = 98,724.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.