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Finding the Fourth Proportional to 43,808.30, 65,712.45 and 36,809.90

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Solution

The fourth proportional to 43,808.30, 65,712.45 and 36,809.90 is: 55,214.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,808.30 : 65,712.45 = 36,809.90 : x
  2. Step 2: Convert to fraction form
    43,808.30/65,712.45 = 36,809.90/x
  3. Step 3: Cross multiply
    43,808.30x = 65,712.45 × 36,809.90
  4. Step 4: Simplify right side
    43,808.30x = 2,418,868,713.26
  5. Step 5: Solve for x
    x = 2,418,868,713.26/43,808.30
  6. Step 6: Final answer
    x = 55,214.85

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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.