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Finding the Fourth Proportional to 64,465.56, 96,712.11 and 20,091.33

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Solution

The fourth proportional to 64,465.56, 96,712.11 and 20,091.33 is: 30,141.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,465.56 : 96,712.11 = 20,091.33 : x
  2. Step 2: Convert to fraction form
    64,465.56/96,712.11 = 20,091.33/x
  3. Step 3: Cross multiply
    64,465.56x = 96,712.11 × 20,091.33
  4. Step 4: Simplify right side
    64,465.56x = 1,943,074,917.01
  5. Step 5: Solve for x
    x = 1,943,074,917.01/64,465.56
  6. Step 6: Final answer
    x = 30,141.29

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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.