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Finding the Fourth Proportional to 43,885.80, 65,636.70 and 39,239.40

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Solution

The fourth proportional to 43,885.80, 65,636.70 and 39,239.40 is: 58,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,885.80 : 65,636.70 = 39,239.40 : x
  2. Step 2: Convert to fraction form
    43,885.80/65,636.70 = 39,239.40/x
  3. Step 3: Cross multiply
    43,885.80x = 65,636.70 × 39,239.40
  4. Step 4: Simplify right side
    43,885.80x = 2,575,544,725.98
  5. Step 5: Solve for x
    x = 2,575,544,725.98/43,885.80
  6. Step 6: Final answer
    x = 58,687.43

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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.