Home / 53,435.70-80,142.62-18,378.09

Finding the Fourth Proportional to 53,435.70, 80,142.62 and 18,378.09

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Solution

The fourth proportional to 53,435.70, 80,142.62 and 18,378.09 is: 27,563.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,435.70 : 80,142.62 = 18,378.09 : x
  2. Step 2: Convert to fraction form
    53,435.70/80,142.62 = 18,378.09/x
  3. Step 3: Cross multiply
    53,435.70x = 80,142.62 × 18,378.09
  4. Step 4: Simplify right side
    53,435.70x = 1,472,868,191.31
  5. Step 5: Solve for x
    x = 1,472,868,191.31/53,435.70
  6. Step 6: Final answer
    x = 27,563.37

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1.5x scale

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.