Home / 57,831.60-86,731.20-18,400.80

Finding the Fourth Proportional to 57,831.60, 86,731.20 and 18,400.80

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Solution

The fourth proportional to 57,831.60, 86,731.20 and 18,400.80 is: 27,596.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,831.60 : 86,731.20 = 18,400.80 : x
  2. Step 2: Convert to fraction form
    57,831.60/86,731.20 = 18,400.80/x
  3. Step 3: Cross multiply
    57,831.60x = 86,731.20 × 18,400.80
  4. Step 4: Simplify right side
    57,831.60x = 1,595,923,464.96
  5. Step 5: Solve for x
    x = 1,595,923,464.96/57,831.60
  6. Step 6: Final answer
    x = 27,596.05

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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.