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Finding the Fourth Proportional to 43,393.26, 65,066.48 and 19,687.87

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Solution

The fourth proportional to 43,393.26, 65,066.48 and 19,687.87 is: 29,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,393.26 : 65,066.48 = 19,687.87 : x
  2. Step 2: Convert to fraction form
    43,393.26/65,066.48 = 19,687.87/x
  3. Step 3: Cross multiply
    43,393.26x = 65,066.48 × 19,687.87
  4. Step 4: Simplify right side
    43,393.26x = 1,281,020,138.49
  5. Step 5: Solve for x
    x = 1,281,020,138.49/43,393.26
  6. Step 6: Final answer
    x = 29,521.18

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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.