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Finding the Fourth Proportional to 68,555.36, 102,831.96 and 36,980.12

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Solution

The fourth proportional to 68,555.36, 102,831.96 and 36,980.12 is: 55,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,555.36 : 102,831.96 = 36,980.12 : x
  2. Step 2: Convert to fraction form
    68,555.36/102,831.96 = 36,980.12/x
  3. Step 3: Cross multiply
    68,555.36x = 102,831.96 × 36,980.12
  4. Step 4: Simplify right side
    68,555.36x = 3,802,738,220.64
  5. Step 5: Solve for x
    x = 3,802,738,220.64/68,555.36
  6. Step 6: Final answer
    x = 55,469.60

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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.