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Finding the Fourth Proportional to 74,679.84, 112,039.20 and 27,936.36

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Solution

The fourth proportional to 74,679.84, 112,039.20 and 27,936.36 is: 41,911.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,679.84 : 112,039.20 = 27,936.36 : x
  2. Step 2: Convert to fraction form
    74,679.84/112,039.20 = 27,936.36/x
  3. Step 3: Cross multiply
    74,679.84x = 112,039.20 × 27,936.36
  4. Step 4: Simplify right side
    74,679.84x = 3,129,967,425.31
  5. Step 5: Solve for x
    x = 3,129,967,425.31/74,679.84
  6. Step 6: Final answer
    x = 41,911.81

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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.