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Finding the Fourth Proportional to 61,093.46, 91,654.56 and 18,971.42

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Solution

The fourth proportional to 61,093.46, 91,654.56 and 18,971.42 is: 28,461.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,093.46 : 91,654.56 = 18,971.42 : x
  2. Step 2: Convert to fraction form
    61,093.46/91,654.56 = 18,971.42/x
  3. Step 3: Cross multiply
    61,093.46x = 91,654.56 × 18,971.42
  4. Step 4: Simplify right side
    61,093.46x = 1,738,817,152.68
  5. Step 5: Solve for x
    x = 1,738,817,152.68/61,093.46
  6. Step 6: Final answer
    x = 28,461.59

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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.