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Finding the Fourth Proportional to 77,940.51, 107,553.87 and 43,948.05

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Solution

The fourth proportional to 77,940.51, 107,553.87 and 43,948.05 is: 60,646.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,940.51 : 107,553.87 = 43,948.05 : x
  2. Step 2: Convert to fraction form
    77,940.51/107,553.87 = 43,948.05/x
  3. Step 3: Cross multiply
    77,940.51x = 107,553.87 × 43,948.05
  4. Step 4: Simplify right side
    77,940.51x = 4,726,782,856.45
  5. Step 5: Solve for x
    x = 4,726,782,856.45/77,940.51
  6. Step 6: Final answer
    x = 60,646.03

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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.