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Finding the Fourth Proportional to 70,858.67, 97,789.40 and 39,027.56

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Solution

The fourth proportional to 70,858.67, 97,789.40 and 39,027.56 is: 53,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,858.67 : 97,789.40 = 39,027.56 : x
  2. Step 2: Convert to fraction form
    70,858.67/97,789.40 = 39,027.56/x
  3. Step 3: Cross multiply
    70,858.67x = 97,789.40 × 39,027.56
  4. Step 4: Simplify right side
    70,858.67x = 3,816,480,991.78
  5. Step 5: Solve for x
    x = 3,816,480,991.78/70,858.67
  6. Step 6: Final answer
    x = 53,860.47

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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.