Home / 75,683.20-104,440-42,148.48

Finding the Fourth Proportional to 75,683.20, 104,440 and 42,148.48

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Solution

The fourth proportional to 75,683.20, 104,440 and 42,148.48 is: 58,163.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,683.20 : 104,440 = 42,148.48 : x
  2. Step 2: Convert to fraction form
    75,683.20/104,440 = 42,148.48/x
  3. Step 3: Cross multiply
    75,683.20x = 104,440 × 42,148.48
  4. Step 4: Simplify right side
    75,683.20x = 4,401,987,251.20
  5. Step 5: Solve for x
    x = 4,401,987,251.20/75,683.20
  6. Step 6: Final answer
    x = 58,163.33

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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.