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Finding the Fourth Proportional to 84,999.78, 117,286.38 and 47,274.03

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Solution

The fourth proportional to 84,999.78, 117,286.38 and 47,274.03 is: 65,230.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,999.78 : 117,286.38 = 47,274.03 : x
  2. Step 2: Convert to fraction form
    84,999.78/117,286.38 = 47,274.03/x
  3. Step 3: Cross multiply
    84,999.78x = 117,286.38 × 47,274.03
  4. Step 4: Simplify right side
    84,999.78x = 5,544,599,846.71
  5. Step 5: Solve for x
    x = 5,544,599,846.71/84,999.78
  6. Step 6: Final answer
    x = 65,230.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.