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Finding the Fourth Proportional to 43,340.70, 65,011.30 and 13,354.55

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Solution

The fourth proportional to 43,340.70, 65,011.30 and 13,354.55 is: 20,031.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,340.70 : 65,011.30 = 13,354.55 : x
  2. Step 2: Convert to fraction form
    43,340.70/65,011.30 = 13,354.55/x
  3. Step 3: Cross multiply
    43,340.70x = 65,011.30 × 13,354.55
  4. Step 4: Simplify right side
    43,340.70x = 868,196,297.97
  5. Step 5: Solve for x
    x = 868,196,297.97/43,340.70
  6. Step 6: Final answer
    x = 20,031.89

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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.