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Finding the Fourth Proportional to 63,649.44, 87,795.81 and 39,109.50

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Solution

The fourth proportional to 63,649.44, 87,795.81 and 39,109.50 is: 53,946.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,649.44 : 87,795.81 = 39,109.50 : x
  2. Step 2: Convert to fraction form
    63,649.44/87,795.81 = 39,109.50/x
  3. Step 3: Cross multiply
    63,649.44x = 87,795.81 × 39,109.50
  4. Step 4: Simplify right side
    63,649.44x = 3,433,650,231.20
  5. Step 5: Solve for x
    x = 3,433,650,231.20/63,649.44
  6. Step 6: Final answer
    x = 53,946.28

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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.