Home / 87,831.42-131,747.16-21,271.56

Finding the Fourth Proportional to 87,831.42, 131,747.16 and 21,271.56

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Solution

The fourth proportional to 87,831.42, 131,747.16 and 21,271.56 is: 31,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,831.42 : 131,747.16 = 21,271.56 : x
  2. Step 2: Convert to fraction form
    87,831.42/131,747.16 = 21,271.56/x
  3. Step 3: Cross multiply
    87,831.42x = 131,747.16 × 21,271.56
  4. Step 4: Simplify right side
    87,831.42x = 2,802,467,618.77
  5. Step 5: Solve for x
    x = 2,802,467,618.77/87,831.42
  6. Step 6: Final answer
    x = 31,907.35

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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.