Home / 40,138.12-60,185.26-31,871.24

Finding the Fourth Proportional to 40,138.12, 60,185.26 and 31,871.24

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Solution

The fourth proportional to 40,138.12, 60,185.26 and 31,871.24 is: 47,789.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.12 : 60,185.26 = 31,871.24 : x
  2. Step 2: Convert to fraction form
    40,138.12/60,185.26 = 31,871.24/x
  3. Step 3: Cross multiply
    40,138.12x = 60,185.26 × 31,871.24
  4. Step 4: Simplify right side
    40,138.12x = 1,918,178,865.92
  5. Step 5: Solve for x
    x = 1,918,178,865.92/40,138.12
  6. Step 6: Final answer
    x = 47,789.45

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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.