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Finding the Fourth Proportional to 43,459.80, 65,163.30 and 17,134.20

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Solution

The fourth proportional to 43,459.80, 65,163.30 and 17,134.20 is: 25,690.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,459.80 : 65,163.30 = 17,134.20 : x
  2. Step 2: Convert to fraction form
    43,459.80/65,163.30 = 17,134.20/x
  3. Step 3: Cross multiply
    43,459.80x = 65,163.30 × 17,134.20
  4. Step 4: Simplify right side
    43,459.80x = 1,116,521,014.86
  5. Step 5: Solve for x
    x = 1,116,521,014.86/43,459.80
  6. Step 6: Final answer
    x = 25,690.89

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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.