Home / 53,887.20-80,845.40-20,589.72

Finding the Fourth Proportional to 53,887.20, 80,845.40 and 20,589.72

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Solution

The fourth proportional to 53,887.20, 80,845.40 and 20,589.72 is: 30,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,887.20 : 80,845.40 = 20,589.72 : x
  2. Step 2: Convert to fraction form
    53,887.20/80,845.40 = 20,589.72/x
  3. Step 3: Cross multiply
    53,887.20x = 80,845.40 × 20,589.72
  4. Step 4: Simplify right side
    53,887.20x = 1,664,584,149.29
  5. Step 5: Solve for x
    x = 1,664,584,149.29/53,887.20
  6. Step 6: Final answer
    x = 30,890.16

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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.