Home / 53,831.80-80,711.20-30,155.64

Finding the Fourth Proportional to 53,831.80, 80,711.20 and 30,155.64

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Solution

The fourth proportional to 53,831.80, 80,711.20 and 30,155.64 is: 45,213.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,831.80 : 80,711.20 = 30,155.64 : x
  2. Step 2: Convert to fraction form
    53,831.80/80,711.20 = 30,155.64/x
  3. Step 3: Cross multiply
    53,831.80x = 80,711.20 × 30,155.64
  4. Step 4: Simplify right side
    53,831.80x = 2,433,897,891.17
  5. Step 5: Solve for x
    x = 2,433,897,891.17/53,831.80
  6. Step 6: Final answer
    x = 45,213.01

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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.