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Finding the Fourth Proportional to 60,831.68, 91,240.34 and 18,711.68

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Solution

The fourth proportional to 60,831.68, 91,240.34 and 18,711.68 is: 28,065.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,831.68 : 91,240.34 = 18,711.68 : x
  2. Step 2: Convert to fraction form
    60,831.68/91,240.34 = 18,711.68/x
  3. Step 3: Cross multiply
    60,831.68x = 91,240.34 × 18,711.68
  4. Step 4: Simplify right side
    60,831.68x = 1,707,260,179.71
  5. Step 5: Solve for x
    x = 1,707,260,179.71/60,831.68
  6. Step 6: Final answer
    x = 28,065.31

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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.