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Finding the Fourth Proportional to 103,990.71, 155,997 and 33,875.49

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Solution

The fourth proportional to 103,990.71, 155,997 and 33,875.49 is: 50,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,990.71 : 155,997 = 33,875.49 : x
  2. Step 2: Convert to fraction form
    103,990.71/155,997 = 33,875.49/x
  3. Step 3: Cross multiply
    103,990.71x = 155,997 × 33,875.49
  4. Step 4: Simplify right side
    103,990.71x = 5,284,474,813.53
  5. Step 5: Solve for x
    x = 5,284,474,813.53/103,990.71
  6. Step 6: Final answer
    x = 50,816.80

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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.