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Finding the Fourth Proportional to 85,561.74, 118,027.80 and 49,747.79

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Solution

The fourth proportional to 85,561.74, 118,027.80 and 49,747.79 is: 68,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,561.74 : 118,027.80 = 49,747.79 : x
  2. Step 2: Convert to fraction form
    85,561.74/118,027.80 = 49,747.79/x
  3. Step 3: Cross multiply
    85,561.74x = 118,027.80 × 49,747.79
  4. Step 4: Simplify right side
    85,561.74x = 5,871,622,837.72
  5. Step 5: Solve for x
    x = 5,871,622,837.72/85,561.74
  6. Step 6: Final answer
    x = 68,624.40

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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.