Home / 53,299.26-79,861.40-18,219.78

Finding the Fourth Proportional to 53,299.26, 79,861.40 and 18,219.78

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Solution

The fourth proportional to 53,299.26, 79,861.40 and 18,219.78 is: 27,299.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,299.26 : 79,861.40 = 18,219.78 : x
  2. Step 2: Convert to fraction form
    53,299.26/79,861.40 = 18,219.78/x
  3. Step 3: Cross multiply
    53,299.26x = 79,861.40 × 18,219.78
  4. Step 4: Simplify right side
    53,299.26x = 1,455,057,138.49
  5. Step 5: Solve for x
    x = 1,455,057,138.49/53,299.26
  6. Step 6: Final answer
    x = 27,299.76

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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.