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Finding the Fourth Proportional to 63,638, 87,818 and 35,345.48

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Solution

The fourth proportional to 63,638, 87,818 and 35,345.48 is: 48,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,638 : 87,818 = 35,345.48 : x
  2. Step 2: Convert to fraction form
    63,638/87,818 = 35,345.48/x
  3. Step 3: Cross multiply
    63,638x = 87,818 × 35,345.48
  4. Step 4: Simplify right side
    63,638x = 3,103,969,362.64
  5. Step 5: Solve for x
    x = 3,103,969,362.64/63,638
  6. Step 6: Final answer
    x = 48,775.41

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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.