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Finding the Fourth Proportional to 63,671.72, 87,867.50 and 39,812.23

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Solution

The fourth proportional to 63,671.72, 87,867.50 and 39,812.23 is: 54,941.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,671.72 : 87,867.50 = 39,812.23 : x
  2. Step 2: Convert to fraction form
    63,671.72/87,867.50 = 39,812.23/x
  3. Step 3: Cross multiply
    63,671.72x = 87,867.50 × 39,812.23
  4. Step 4: Simplify right side
    63,671.72x = 3,498,201,119.53
  5. Step 5: Solve for x
    x = 3,498,201,119.53/63,671.72
  6. Step 6: Final answer
    x = 54,941.21

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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.