Home / 75,650.28-104,172-73,971.88

Finding the Fourth Proportional to 75,650.28, 104,172 and 73,971.88

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Solution

The fourth proportional to 75,650.28, 104,172 and 73,971.88 is: 101,860.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,650.28 : 104,172 = 73,971.88 : x
  2. Step 2: Convert to fraction form
    75,650.28/104,172 = 73,971.88/x
  3. Step 3: Cross multiply
    75,650.28x = 104,172 × 73,971.88
  4. Step 4: Simplify right side
    75,650.28x = 7,705,798,683.36
  5. Step 5: Solve for x
    x = 7,705,798,683.36/75,650.28
  6. Step 6: Final answer
    x = 101,860.81

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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.