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Finding the Fourth Proportional to 86,035, 118,676.82 and 54,148.54

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Solution

The fourth proportional to 86,035, 118,676.82 and 54,148.54 is: 74,692.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,035 : 118,676.82 = 54,148.54 : x
  2. Step 2: Convert to fraction form
    86,035/118,676.82 = 54,148.54/x
  3. Step 3: Cross multiply
    86,035x = 118,676.82 × 54,148.54
  4. Step 4: Simplify right side
    86,035x = 6,426,176,534.84
  5. Step 5: Solve for x
    x = 6,426,176,534.84/86,035
  6. Step 6: Final answer
    x = 74,692.58

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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.