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Finding the Fourth Proportional to 43,487.70, 65,250.12 and 18,539.50

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Solution

The fourth proportional to 43,487.70, 65,250.12 and 18,539.50 is: 27,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,487.70 : 65,250.12 = 18,539.50 : x
  2. Step 2: Convert to fraction form
    43,487.70/65,250.12 = 18,539.50/x
  3. Step 3: Cross multiply
    43,487.70x = 65,250.12 × 18,539.50
  4. Step 4: Simplify right side
    43,487.70x = 1,209,704,599.74
  5. Step 5: Solve for x
    x = 1,209,704,599.74/43,487.70
  6. Step 6: Final answer
    x = 27,817.17

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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.