Home / 87,831.16-131,719.51-31,664.00

Finding the Fourth Proportional to 87,831.16, 131,719.51 and 31,664.00

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Solution

The fourth proportional to 87,831.16, 131,719.51 and 31,664.00 is: 47,486.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,831.16 : 131,719.51 = 31,664.00 : x
  2. Step 2: Convert to fraction form
    87,831.16/131,719.51 = 31,664.00/x
  3. Step 3: Cross multiply
    87,831.16x = 131,719.51 × 31,664.00
  4. Step 4: Simplify right side
    87,831.16x = 4,170,766,625.84
  5. Step 5: Solve for x
    x = 4,170,766,625.84/87,831.16
  6. Step 6: Final answer
    x = 47,486.18

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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.