Home / 74,768.57-112,120.05-27,988.64

Finding the Fourth Proportional to 74,768.57, 112,120.05 and 27,988.64

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Solution

The fourth proportional to 74,768.57, 112,120.05 and 27,988.64 is: 41,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,768.57 : 112,120.05 = 27,988.64 : x
  2. Step 2: Convert to fraction form
    74,768.57/112,120.05 = 27,988.64/x
  3. Step 3: Cross multiply
    74,768.57x = 112,120.05 × 27,988.64
  4. Step 4: Simplify right side
    74,768.57x = 3,138,087,996.53
  5. Step 5: Solve for x
    x = 3,138,087,996.53/74,768.57
  6. Step 6: Final answer
    x = 41,970.68

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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.