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Finding the Fourth Proportional to 63,449.54, 87,520.72 and 40,818

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Solution

The fourth proportional to 63,449.54, 87,520.72 and 40,818 is: 56,303.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,449.54 : 87,520.72 = 40,818 : x
  2. Step 2: Convert to fraction form
    63,449.54/87,520.72 = 40,818/x
  3. Step 3: Cross multiply
    63,449.54x = 87,520.72 × 40,818
  4. Step 4: Simplify right side
    63,449.54x = 3,572,420,748.96
  5. Step 5: Solve for x
    x = 3,572,420,748.96/63,449.54
  6. Step 6: Final answer
    x = 56,303.34

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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.