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Finding the Fourth Proportional to 79,241.78, 118,665.49 and 55,437.89

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Solution

The fourth proportional to 79,241.78, 118,665.49 and 55,437.89 is: 83,018.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,241.78 : 118,665.49 = 55,437.89 : x
  2. Step 2: Convert to fraction form
    79,241.78/118,665.49 = 55,437.89/x
  3. Step 3: Cross multiply
    79,241.78x = 118,665.49 × 55,437.89
  4. Step 4: Simplify right side
    79,241.78x = 6,578,564,539.49
  5. Step 5: Solve for x
    x = 6,578,564,539.49/79,241.78
  6. Step 6: Final answer
    x = 83,018.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.