Home / 53,428.90-80,139.57-18,367.78

Finding the Fourth Proportional to 53,428.90, 80,139.57 and 18,367.78

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Solution

The fourth proportional to 53,428.90, 80,139.57 and 18,367.78 is: 27,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,428.90 : 80,139.57 = 18,367.78 : x
  2. Step 2: Convert to fraction form
    53,428.90/80,139.57 = 18,367.78/x
  3. Step 3: Cross multiply
    53,428.90x = 80,139.57 × 18,367.78
  4. Step 4: Simplify right side
    53,428.90x = 1,471,985,991.05
  5. Step 5: Solve for x
    x = 1,471,985,991.05/53,428.90
  6. Step 6: Final answer
    x = 27,550.37

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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.