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Finding the Fourth Proportional to 61,371.92, 84,664.68 and 38,700.56

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Solution

The fourth proportional to 61,371.92, 84,664.68 and 38,700.56 is: 53,388.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,371.92 : 84,664.68 = 38,700.56 : x
  2. Step 2: Convert to fraction form
    61,371.92/84,664.68 = 38,700.56/x
  3. Step 3: Cross multiply
    61,371.92x = 84,664.68 × 38,700.56
  4. Step 4: Simplify right side
    61,371.92x = 3,276,570,528.22
  5. Step 5: Solve for x
    x = 3,276,570,528.22/61,371.92
  6. Step 6: Final answer
    x = 53,388.76

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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.