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Finding the Fourth Proportional to 61,006.35, 91,517.88 and 18,889.89

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Solution

The fourth proportional to 61,006.35, 91,517.88 and 18,889.89 is: 28,337.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,006.35 : 91,517.88 = 18,889.89 : x
  2. Step 2: Convert to fraction form
    61,006.35/91,517.88 = 18,889.89/x
  3. Step 3: Cross multiply
    61,006.35x = 91,517.88 × 18,889.89
  4. Step 4: Simplify right side
    61,006.35x = 1,728,762,686.23
  5. Step 5: Solve for x
    x = 1,728,762,686.23/61,006.35
  6. Step 6: Final answer
    x = 28,337.42

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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.