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Finding the Fourth Proportional to 61,034.30, 91,564.50 and 18,913.44

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Solution

The fourth proportional to 61,034.30, 91,564.50 and 18,913.44 is: 28,374.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,034.30 : 91,564.50 = 18,913.44 : x
  2. Step 2: Convert to fraction form
    61,034.30/91,564.50 = 18,913.44/x
  3. Step 3: Cross multiply
    61,034.30x = 91,564.50 × 18,913.44
  4. Step 4: Simplify right side
    61,034.30x = 1,731,799,676.88
  5. Step 5: Solve for x
    x = 1,731,799,676.88/61,034.30
  6. Step 6: Final answer
    x = 28,374.21

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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.