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Finding the Fourth Proportional to 63,781.90, 88,029.80 and 36,940.72

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Solution

The fourth proportional to 63,781.90, 88,029.80 and 36,940.72 is: 50,984.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,781.90 : 88,029.80 = 36,940.72 : x
  2. Step 2: Convert to fraction form
    63,781.90/88,029.80 = 36,940.72/x
  3. Step 3: Cross multiply
    63,781.90x = 88,029.80 × 36,940.72
  4. Step 4: Simplify right side
    63,781.90x = 3,251,884,193.46
  5. Step 5: Solve for x
    x = 3,251,884,193.46/63,781.90
  6. Step 6: Final answer
    x = 50,984.44

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1.5x scale

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.