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Finding the Fourth Proportional to 103,992.21, 155,988.32 and 33,871.52

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Solution

The fourth proportional to 103,992.21, 155,988.32 and 33,871.52 is: 50,807.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,992.21 : 155,988.32 = 33,871.52 : x
  2. Step 2: Convert to fraction form
    103,992.21/155,988.32 = 33,871.52/x
  3. Step 3: Cross multiply
    103,992.21x = 155,988.32 × 33,871.52
  4. Step 4: Simplify right side
    103,992.21x = 5,283,561,721.26
  5. Step 5: Solve for x
    x = 5,283,561,721.26/103,992.21
  6. Step 6: Final answer
    x = 50,807.28

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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.