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Finding the Fourth Proportional to 103,991.67, 155,987.51 and 33,870.98

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Solution

The fourth proportional to 103,991.67, 155,987.51 and 33,870.98 is: 50,806.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,991.67 : 155,987.51 = 33,870.98 : x
  2. Step 2: Convert to fraction form
    103,991.67/155,987.51 = 33,870.98/x
  3. Step 3: Cross multiply
    103,991.67x = 155,987.51 × 33,870.98
  4. Step 4: Simplify right side
    103,991.67x = 5,283,448,882.17
  5. Step 5: Solve for x
    x = 5,283,448,882.17/103,991.67
  6. Step 6: Final answer
    x = 50,806.46

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Similar ratio
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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.