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Finding the Fourth Proportional to 61,748.46, 85,135.46 and 50,406.44

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Solution

The fourth proportional to 61,748.46, 85,135.46 and 50,406.44 is: 69,497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,748.46 : 85,135.46 = 50,406.44 : x
  2. Step 2: Convert to fraction form
    61,748.46/85,135.46 = 50,406.44/x
  3. Step 3: Cross multiply
    61,748.46x = 85,135.46 × 50,406.44
  4. Step 4: Simplify right side
    61,748.46x = 4,291,374,778.65
  5. Step 5: Solve for x
    x = 4,291,374,778.65/61,748.46
  6. Step 6: Final answer
    x = 69,497.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.