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Finding the Fourth Proportional to 64,268.91, 96,407.44 and 19,891.94

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Solution

The fourth proportional to 64,268.91, 96,407.44 and 19,891.94 is: 29,839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,268.91 : 96,407.44 = 19,891.94 : x
  2. Step 2: Convert to fraction form
    64,268.91/96,407.44 = 19,891.94/x
  3. Step 3: Cross multiply
    64,268.91x = 96,407.44 × 19,891.94
  4. Step 4: Simplify right side
    64,268.91x = 1,917,730,480.27
  5. Step 5: Solve for x
    x = 1,917,730,480.27/64,268.91
  6. Step 6: Final answer
    x = 29,839.16

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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.