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Finding the Fourth Proportional to 85,480.15, 117,956.42 and 47,239.24

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Solution

The fourth proportional to 85,480.15, 117,956.42 and 47,239.24 is: 65,186.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,480.15 : 117,956.42 = 47,239.24 : x
  2. Step 2: Convert to fraction form
    85,480.15/117,956.42 = 47,239.24/x
  3. Step 3: Cross multiply
    85,480.15x = 117,956.42 × 47,239.24
  4. Step 4: Simplify right side
    85,480.15x = 5,572,171,044.14
  5. Step 5: Solve for x
    x = 5,572,171,044.14/85,480.15
  6. Step 6: Final answer
    x = 65,186.73

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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.