Home / 80,831.20-121,246.80-52,837.60

Finding the Fourth Proportional to 80,831.20, 121,246.80 and 52,837.60

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Solution

The fourth proportional to 80,831.20, 121,246.80 and 52,837.60 is: 79,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.20 : 121,246.80 = 52,837.60 : x
  2. Step 2: Convert to fraction form
    80,831.20/121,246.80 = 52,837.60/x
  3. Step 3: Cross multiply
    80,831.20x = 121,246.80 × 52,837.60
  4. Step 4: Simplify right side
    80,831.20x = 6,406,389,919.68
  5. Step 5: Solve for x
    x = 6,406,389,919.68/80,831.20
  6. Step 6: Final answer
    x = 79,256.40

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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.