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Finding the Fourth Proportional to 81,707.00, 112,767.94 and 49,894.25

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Solution

The fourth proportional to 81,707.00, 112,767.94 and 49,894.25 is: 68,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,707.00 : 112,767.94 = 49,894.25 : x
  2. Step 2: Convert to fraction form
    81,707.00/112,767.94 = 49,894.25/x
  3. Step 3: Cross multiply
    81,707.00x = 112,767.94 × 49,894.25
  4. Step 4: Simplify right side
    81,707.00x = 5,626,472,213.22
  5. Step 5: Solve for x
    x = 5,626,472,213.22/81,707.00
  6. Step 6: Final answer
    x = 68,861.57

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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.