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Finding the Fourth Proportional to 50,630.80, 76,008.60 and 31,910.80

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Solution

The fourth proportional to 50,630.80, 76,008.60 and 31,910.80 is: 47,905.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,630.80 : 76,008.60 = 31,910.80 : x
  2. Step 2: Convert to fraction form
    50,630.80/76,008.60 = 31,910.80/x
  3. Step 3: Cross multiply
    50,630.80x = 76,008.60 × 31,910.80
  4. Step 4: Simplify right side
    50,630.80x = 2,425,495,232.88
  5. Step 5: Solve for x
    x = 2,425,495,232.88/50,630.80
  6. Step 6: Final answer
    x = 47,905.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.