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Finding the Fourth Proportional to 61,264.35, 91,942.29 and 45,505.80

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Solution

The fourth proportional to 61,264.35, 91,942.29 and 45,505.80 is: 68,292.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,264.35 : 91,942.29 = 45,505.80 : x
  2. Step 2: Convert to fraction form
    61,264.35/91,942.29 = 45,505.80/x
  3. Step 3: Cross multiply
    61,264.35x = 91,942.29 × 45,505.80
  4. Step 4: Simplify right side
    61,264.35x = 4,183,907,460.28
  5. Step 5: Solve for x
    x = 4,183,907,460.28/61,264.35
  6. Step 6: Final answer
    x = 68,292.69

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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.