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Finding the Fourth Proportional to 63,919.88, 88,368.88 and 47,976.64

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Solution

The fourth proportional to 63,919.88, 88,368.88 and 47,976.64 is: 66,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,919.88 : 88,368.88 = 47,976.64 : x
  2. Step 2: Convert to fraction form
    63,919.88/88,368.88 = 47,976.64/x
  3. Step 3: Cross multiply
    63,919.88x = 88,368.88 × 47,976.64
  4. Step 4: Simplify right side
    63,919.88x = 4,239,641,942.96
  5. Step 5: Solve for x
    x = 4,239,641,942.96/63,919.88
  6. Step 6: Final answer
    x = 66,327.44

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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.