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Finding the Fourth Proportional to 74,768.82, 112,120.42 and 27,988.89

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Solution

The fourth proportional to 74,768.82, 112,120.42 and 27,988.89 is: 41,971.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,768.82 : 112,120.42 = 27,988.89 : x
  2. Step 2: Convert to fraction form
    74,768.82/112,120.42 = 27,988.89/x
  3. Step 3: Cross multiply
    74,768.82x = 112,120.42 × 27,988.89
  4. Step 4: Simplify right side
    74,768.82x = 3,138,126,102.13
  5. Step 5: Solve for x
    x = 3,138,126,102.13/74,768.82
  6. Step 6: Final answer
    x = 41,971.05

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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.