Home / 60,831.60-91,231.20-18,711.60

Finding the Fourth Proportional to 60,831.60, 91,231.20 and 18,711.60

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Solution

The fourth proportional to 60,831.60, 91,231.20 and 18,711.60 is: 28,062.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,831.60 : 91,231.20 = 18,711.60 : x
  2. Step 2: Convert to fraction form
    60,831.60/91,231.20 = 18,711.60/x
  3. Step 3: Cross multiply
    60,831.60x = 91,231.20 × 18,711.60
  4. Step 4: Simplify right side
    60,831.60x = 1,707,081,721.92
  5. Step 5: Solve for x
    x = 1,707,081,721.92/60,831.60
  6. Step 6: Final answer
    x = 28,062.42

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1.5x scale

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.