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Finding the Fourth Proportional to 63,379.94, 87,464.43 and 40,719.06

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Solution

The fourth proportional to 63,379.94, 87,464.43 and 40,719.06 is: 56,192.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,379.94 : 87,464.43 = 40,719.06 : x
  2. Step 2: Convert to fraction form
    63,379.94/87,464.43 = 40,719.06/x
  3. Step 3: Cross multiply
    63,379.94x = 87,464.43 × 40,719.06
  4. Step 4: Simplify right side
    63,379.94x = 3,561,469,373.04
  5. Step 5: Solve for x
    x = 3,561,469,373.04/63,379.94
  6. Step 6: Final answer
    x = 56,192.38

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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.