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Finding the Fourth Proportional to 63,388.98, 87,451.80 and 40,724.82

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Solution

The fourth proportional to 63,388.98, 87,451.80 and 40,724.82 is: 56,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,388.98 : 87,451.80 = 40,724.82 : x
  2. Step 2: Convert to fraction form
    63,388.98/87,451.80 = 40,724.82/x
  3. Step 3: Cross multiply
    63,388.98x = 87,451.80 × 40,724.82
  4. Step 4: Simplify right side
    63,388.98x = 3,561,458,813.68
  5. Step 5: Solve for x
    x = 3,561,458,813.68/63,388.98
  6. Step 6: Final answer
    x = 56,184.20

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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.