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Finding the Fourth Proportional to 68,649.60, 103,060.80 and 37,084.80

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Solution

The fourth proportional to 68,649.60, 103,060.80 and 37,084.80 is: 55,673.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,649.60 : 103,060.80 = 37,084.80 : x
  2. Step 2: Convert to fraction form
    68,649.60/103,060.80 = 37,084.80/x
  3. Step 3: Cross multiply
    68,649.60x = 103,060.80 × 37,084.80
  4. Step 4: Simplify right side
    68,649.60x = 3,821,989,155.84
  5. Step 5: Solve for x
    x = 3,821,989,155.84/68,649.60
  6. Step 6: Final answer
    x = 55,673.87

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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.