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Finding the Fourth Proportional to 70,649.64, 106,064.41 and 45,793.70

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Solution

The fourth proportional to 70,649.64, 106,064.41 and 45,793.70 is: 68,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,649.64 : 106,064.41 = 45,793.70 : x
  2. Step 2: Convert to fraction form
    70,649.64/106,064.41 = 45,793.70/x
  3. Step 3: Cross multiply
    70,649.64x = 106,064.41 × 45,793.70
  4. Step 4: Simplify right side
    70,649.64x = 4,857,082,336.42
  5. Step 5: Solve for x
    x = 4,857,082,336.42/70,649.64
  6. Step 6: Final answer
    x = 68,748.86

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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.