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Finding the Fourth Proportional to 70,861.35, 106,310.29 and 26,488.43

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Solution

The fourth proportional to 70,861.35, 106,310.29 and 26,488.43 is: 39,739.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,861.35 : 106,310.29 = 26,488.43 : x
  2. Step 2: Convert to fraction form
    70,861.35/106,310.29 = 26,488.43/x
  3. Step 3: Cross multiply
    70,861.35x = 106,310.29 × 26,488.43
  4. Step 4: Simplify right side
    70,861.35x = 2,815,992,674.94
  5. Step 5: Solve for x
    x = 2,815,992,674.94/70,861.35
  6. Step 6: Final answer
    x = 39,739.47

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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.