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Finding the Fourth Proportional to 103,991.46, 155,987.16 and 33,870.76

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Solution

The fourth proportional to 103,991.46, 155,987.16 and 33,870.76 is: 50,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,991.46 : 155,987.16 = 33,870.76 : x
  2. Step 2: Convert to fraction form
    103,991.46/155,987.16 = 33,870.76/x
  3. Step 3: Cross multiply
    103,991.46x = 155,987.16 × 33,870.76
  4. Step 4: Simplify right side
    103,991.46x = 5,283,403,659.44
  5. Step 5: Solve for x
    x = 5,283,403,659.44/103,991.46
  6. Step 6: Final answer
    x = 50,806.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.