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Finding the Fourth Proportional to 61,219.70, 91,829.55 and 41,390.90

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Solution

The fourth proportional to 61,219.70, 91,829.55 and 41,390.90 is: 62,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,219.70 : 91,829.55 = 41,390.90 : x
  2. Step 2: Convert to fraction form
    61,219.70/91,829.55 = 41,390.90/x
  3. Step 3: Cross multiply
    61,219.70x = 91,829.55 × 41,390.90
  4. Step 4: Simplify right side
    61,219.70x = 3,800,907,721.10
  5. Step 5: Solve for x
    x = 3,800,907,721.10/61,219.70
  6. Step 6: Final answer
    x = 62,086.35

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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.