Home / 75,605.76-104,108.16-71,172.48

Finding the Fourth Proportional to 75,605.76, 104,108.16 and 71,172.48

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Solution

The fourth proportional to 75,605.76, 104,108.16 and 71,172.48 is: 98,003.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,605.76 : 104,108.16 = 71,172.48 : x
  2. Step 2: Convert to fraction form
    75,605.76/104,108.16 = 71,172.48/x
  3. Step 3: Cross multiply
    75,605.76x = 104,108.16 × 71,172.48
  4. Step 4: Simplify right side
    75,605.76x = 7,409,635,935.44
  5. Step 5: Solve for x
    x = 7,409,635,935.44/75,605.76
  6. Step 6: Final answer
    x = 98,003.59

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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.