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Finding the Fourth Proportional to 43,520.40, 65,281.41 and 34,859.88

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Solution

The fourth proportional to 43,520.40, 65,281.41 and 34,859.88 is: 52,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,520.40 : 65,281.41 = 34,859.88 : x
  2. Step 2: Convert to fraction form
    43,520.40/65,281.41 = 34,859.88/x
  3. Step 3: Cross multiply
    43,520.40x = 65,281.41 × 34,859.88
  4. Step 4: Simplify right side
    43,520.40x = 2,275,702,118.83
  5. Step 5: Solve for x
    x = 2,275,702,118.83/43,520.40
  6. Step 6: Final answer
    x = 52,290.47

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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.