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Finding the Fourth Proportional to 85,732.67, 118,342.14 and 69,789.44

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Solution

The fourth proportional to 85,732.67, 118,342.14 and 69,789.44 is: 96,334.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,732.67 : 118,342.14 = 69,789.44 : x
  2. Step 2: Convert to fraction form
    85,732.67/118,342.14 = 69,789.44/x
  3. Step 3: Cross multiply
    85,732.67x = 118,342.14 × 69,789.44
  4. Step 4: Simplify right side
    85,732.67x = 8,259,031,679.00
  5. Step 5: Solve for x
    x = 8,259,031,679.00/85,732.67
  6. Step 6: Final answer
    x = 96,334.71

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1.5x scale

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.