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Finding the Fourth Proportional to 76,633.98, 114,951.02 and 21,229.98

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Solution

The fourth proportional to 76,633.98, 114,951.02 and 21,229.98 is: 31,844.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,633.98 : 114,951.02 = 21,229.98 : x
  2. Step 2: Convert to fraction form
    76,633.98/114,951.02 = 21,229.98/x
  3. Step 3: Cross multiply
    76,633.98x = 114,951.02 × 21,229.98
  4. Step 4: Simplify right side
    76,633.98x = 2,440,407,749.43
  5. Step 5: Solve for x
    x = 2,440,407,749.43/76,633.98
  6. Step 6: Final answer
    x = 31,844.98

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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.