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Finding the Fourth Proportional to 61,151.49, 91,741.68 and 19,029.60

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Solution

The fourth proportional to 61,151.49, 91,741.68 and 19,029.60 is: 28,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,151.49 : 91,741.68 = 19,029.60 : x
  2. Step 2: Convert to fraction form
    61,151.49/91,741.68 = 19,029.60/x
  3. Step 3: Cross multiply
    61,151.49x = 91,741.68 × 19,029.60
  4. Step 4: Simplify right side
    61,151.49x = 1,745,807,473.73
  5. Step 5: Solve for x
    x = 1,745,807,473.73/61,151.49
  6. Step 6: Final answer
    x = 28,548.90

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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.