Home / 70,135.62-105,229.35-25,791.36

Finding the Fourth Proportional to 70,135.62, 105,229.35 and 25,791.36

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Solution

The fourth proportional to 70,135.62, 105,229.35 and 25,791.36 is: 38,696.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,135.62 : 105,229.35 = 25,791.36 : x
  2. Step 2: Convert to fraction form
    70,135.62/105,229.35 = 25,791.36/x
  3. Step 3: Cross multiply
    70,135.62x = 105,229.35 × 25,791.36
  4. Step 4: Simplify right side
    70,135.62x = 2,714,008,048.42
  5. Step 5: Solve for x
    x = 2,714,008,048.42/70,135.62
  6. Step 6: Final answer
    x = 38,696.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.