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Finding the Fourth Proportional to 85,295.49, 117,669.72 and 49,464.75

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Solution

The fourth proportional to 85,295.49, 117,669.72 and 49,464.75 is: 68,239.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,295.49 : 117,669.72 = 49,464.75 : x
  2. Step 2: Convert to fraction form
    85,295.49/117,669.72 = 49,464.75/x
  3. Step 3: Cross multiply
    85,295.49x = 117,669.72 × 49,464.75
  4. Step 4: Simplify right side
    85,295.49x = 5,820,503,026.60
  5. Step 5: Solve for x
    x = 5,820,503,026.60/85,295.49
  6. Step 6: Final answer
    x = 68,239.28

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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.