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Finding the Fourth Proportional to 61,234.96, 91,855.86 and 19,120.86

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Solution

The fourth proportional to 61,234.96, 91,855.86 and 19,120.86 is: 28,682.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,234.96 : 91,855.86 = 19,120.86 : x
  2. Step 2: Convert to fraction form
    61,234.96/91,855.86 = 19,120.86/x
  3. Step 3: Cross multiply
    61,234.96x = 91,855.86 × 19,120.86
  4. Step 4: Simplify right side
    61,234.96x = 1,756,363,039.24
  5. Step 5: Solve for x
    x = 1,756,363,039.24/61,234.96
  6. Step 6: Final answer
    x = 28,682.36

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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.