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Finding the Fourth Proportional to 63,108.84, 86,913.03 and 61,731.03

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Solution

The fourth proportional to 63,108.84, 86,913.03 and 61,731.03 is: 85,015.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,108.84 : 86,913.03 = 61,731.03 : x
  2. Step 2: Convert to fraction form
    63,108.84/86,913.03 = 61,731.03/x
  3. Step 3: Cross multiply
    63,108.84x = 86,913.03 × 61,731.03
  4. Step 4: Simplify right side
    63,108.84x = 5,365,230,930.85
  5. Step 5: Solve for x
    x = 5,365,230,930.85/63,108.84
  6. Step 6: Final answer
    x = 85,015.52

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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.