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Finding the Fourth Proportional to 64,796.64, 89,417.08 and 39,305.92

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Solution

The fourth proportional to 64,796.64, 89,417.08 and 39,305.92 is: 54,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,796.64 : 89,417.08 = 39,305.92 : x
  2. Step 2: Convert to fraction form
    64,796.64/89,417.08 = 39,305.92/x
  3. Step 3: Cross multiply
    64,796.64x = 89,417.08 × 39,305.92
  4. Step 4: Simplify right side
    64,796.64x = 3,514,620,593.11
  5. Step 5: Solve for x
    x = 3,514,620,593.11/64,796.64
  6. Step 6: Final answer
    x = 54,240.78

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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.