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Finding the Fourth Proportional to 68,836.55, 103,285.80 and 37,209.59

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Solution

The fourth proportional to 68,836.55, 103,285.80 and 37,209.59 is: 55,831.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,836.55 : 103,285.80 = 37,209.59 : x
  2. Step 2: Convert to fraction form
    68,836.55/103,285.80 = 37,209.59/x
  3. Step 3: Cross multiply
    68,836.55x = 103,285.80 × 37,209.59
  4. Step 4: Simplify right side
    68,836.55x = 3,843,221,754.39
  5. Step 5: Solve for x
    x = 3,843,221,754.39/68,836.55
  6. Step 6: Final answer
    x = 55,831.12

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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.