Home / 53,686.38-80,561.25-20,434.44

Finding the Fourth Proportional to 53,686.38, 80,561.25 and 20,434.44

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Solution

The fourth proportional to 53,686.38, 80,561.25 and 20,434.44 is: 30,663.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,686.38 : 80,561.25 = 20,434.44 : x
  2. Step 2: Convert to fraction form
    53,686.38/80,561.25 = 20,434.44/x
  3. Step 3: Cross multiply
    53,686.38x = 80,561.25 × 20,434.44
  4. Step 4: Simplify right side
    53,686.38x = 1,646,224,029.45
  5. Step 5: Solve for x
    x = 1,646,224,029.45/53,686.38
  6. Step 6: Final answer
    x = 30,663.72

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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.