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Finding the Fourth Proportional to 81,795.66, 122,640.93 and 34,441.62

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Solution

The fourth proportional to 81,795.66, 122,640.93 and 34,441.62 is: 51,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,795.66 : 122,640.93 = 34,441.62 : x
  2. Step 2: Convert to fraction form
    81,795.66/122,640.93 = 34,441.62/x
  3. Step 3: Cross multiply
    81,795.66x = 122,640.93 × 34,441.62
  4. Step 4: Simplify right side
    81,795.66x = 4,223,952,307.51
  5. Step 5: Solve for x
    x = 4,223,952,307.51/81,795.66
  6. Step 6: Final answer
    x = 51,640.30

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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.