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Finding the Fourth Proportional to 85,236.72, 117,583.44 and 65,058.57

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Solution

The fourth proportional to 85,236.72, 117,583.44 and 65,058.57 is: 89,747.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,236.72 : 117,583.44 = 65,058.57 : x
  2. Step 2: Convert to fraction form
    85,236.72/117,583.44 = 65,058.57/x
  3. Step 3: Cross multiply
    85,236.72x = 117,583.44 × 65,058.57
  4. Step 4: Simplify right side
    85,236.72x = 7,649,810,462.08
  5. Step 5: Solve for x
    x = 7,649,810,462.08/85,236.72
  6. Step 6: Final answer
    x = 89,747.83

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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.