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Finding the Fourth Proportional to 63,588.30, 87,739.11 and 40,891.74

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Solution

The fourth proportional to 63,588.30, 87,739.11 and 40,891.74 is: 56,422.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,588.30 : 87,739.11 = 40,891.74 : x
  2. Step 2: Convert to fraction form
    63,588.30/87,739.11 = 40,891.74/x
  3. Step 3: Cross multiply
    63,588.30x = 87,739.11 × 40,891.74
  4. Step 4: Simplify right side
    63,588.30x = 3,587,804,873.95
  5. Step 5: Solve for x
    x = 3,587,804,873.95/63,588.30
  6. Step 6: Final answer
    x = 56,422.41

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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.