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Finding the Fourth Proportional to 85,362.88, 117,811.92 and 47,644.96

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Solution

The fourth proportional to 85,362.88, 117,811.92 and 47,644.96 is: 65,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,362.88 : 117,811.92 = 47,644.96 : x
  2. Step 2: Convert to fraction form
    85,362.88/117,811.92 = 47,644.96/x
  3. Step 3: Cross multiply
    85,362.88x = 117,811.92 × 47,644.96
  4. Step 4: Simplify right side
    85,362.88x = 5,613,144,215.92
  5. Step 5: Solve for x
    x = 5,613,144,215.92/85,362.88
  6. Step 6: Final answer
    x = 65,756.27

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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.