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Finding the Fourth Proportional to 96,939, 133,773.39 and 53,918.69

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Solution

The fourth proportional to 96,939, 133,773.39 and 53,918.69 is: 74,406.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,939 : 133,773.39 = 53,918.69 : x
  2. Step 2: Convert to fraction form
    96,939/133,773.39 = 53,918.69/x
  3. Step 3: Cross multiply
    96,939x = 133,773.39 × 53,918.69
  4. Step 4: Simplify right side
    96,939x = 7,212,885,276.79
  5. Step 5: Solve for x
    x = 7,212,885,276.79/96,939
  6. Step 6: Final answer
    x = 74,406.43

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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.