Home / 87,831.48-131,747.55-21,271.50

Finding the Fourth Proportional to 87,831.48, 131,747.55 and 21,271.50

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Solution

The fourth proportional to 87,831.48, 131,747.55 and 21,271.50 is: 31,907.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,831.48 : 131,747.55 = 21,271.50 : x
  2. Step 2: Convert to fraction form
    87,831.48/131,747.55 = 21,271.50/x
  3. Step 3: Cross multiply
    87,831.48x = 131,747.55 × 21,271.50
  4. Step 4: Simplify right side
    87,831.48x = 2,802,468,009.83
  5. Step 5: Solve for x
    x = 2,802,468,009.83/87,831.48
  6. Step 6: Final answer
    x = 31,907.33

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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.