Home / 87,831.84-131,746.32-21,271.52

Finding the Fourth Proportional to 87,831.84, 131,746.32 and 21,271.52

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Solution

The fourth proportional to 87,831.84, 131,746.32 and 21,271.52 is: 31,906.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,831.84 : 131,746.32 = 21,271.52 : x
  2. Step 2: Convert to fraction form
    87,831.84/131,746.32 = 21,271.52/x
  3. Step 3: Cross multiply
    87,831.84x = 131,746.32 × 21,271.52
  4. Step 4: Simplify right side
    87,831.84x = 2,802,444,480.81
  5. Step 5: Solve for x
    x = 2,802,444,480.81/87,831.84
  6. Step 6: Final answer
    x = 31,906.93

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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.