Home / 87,990.58-131,911.71-59,831.74

Finding the Fourth Proportional to 87,990.58, 131,911.71 and 59,831.74

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Solution

The fourth proportional to 87,990.58, 131,911.71 and 59,831.74 is: 89,697.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,990.58 : 131,911.71 = 59,831.74 : x
  2. Step 2: Convert to fraction form
    87,990.58/131,911.71 = 59,831.74/x
  3. Step 3: Cross multiply
    87,990.58x = 131,911.71 × 59,831.74
  4. Step 4: Simplify right side
    87,990.58x = 7,892,507,135.68
  5. Step 5: Solve for x
    x = 7,892,507,135.68/87,990.58
  6. Step 6: Final answer
    x = 89,697.18

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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.