Home / 75,673.20-104,426.20-42,138.48

Finding the Fourth Proportional to 75,673.20, 104,426.20 and 42,138.48

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Solution

The fourth proportional to 75,673.20, 104,426.20 and 42,138.48 is: 58,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,673.20 : 104,426.20 = 42,138.48 : x
  2. Step 2: Convert to fraction form
    75,673.20/104,426.20 = 42,138.48/x
  3. Step 3: Cross multiply
    75,673.20x = 104,426.20 × 42,138.48
  4. Step 4: Simplify right side
    75,673.20x = 4,400,361,340.18
  5. Step 5: Solve for x
    x = 4,400,361,340.18/75,673.20
  6. Step 6: Final answer
    x = 58,149.53

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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.