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Finding the Fourth Proportional to 69,958.91, 96,543.63 and 39,745.89

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Solution

The fourth proportional to 69,958.91, 96,543.63 and 39,745.89 is: 54,849.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,958.91 : 96,543.63 = 39,745.89 : x
  2. Step 2: Convert to fraction form
    69,958.91/96,543.63 = 39,745.89/x
  3. Step 3: Cross multiply
    69,958.91x = 96,543.63 × 39,745.89
  4. Step 4: Simplify right side
    69,958.91x = 3,837,212,498.18
  5. Step 5: Solve for x
    x = 3,837,212,498.18/69,958.91
  6. Step 6: Final answer
    x = 54,849.52

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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.