Home / 90,424-124,786.64-50,139.44

Finding the Fourth Proportional to 90,424, 124,786.64 and 50,139.44

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Solution

The fourth proportional to 90,424, 124,786.64 and 50,139.44 is: 69,193.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,424 : 124,786.64 = 50,139.44 : x
  2. Step 2: Convert to fraction form
    90,424/124,786.64 = 50,139.44/x
  3. Step 3: Cross multiply
    90,424x = 124,786.64 × 50,139.44
  4. Step 4: Simplify right side
    90,424x = 6,256,732,249.08
  5. Step 5: Solve for x
    x = 6,256,732,249.08/90,424
  6. Step 6: Final answer
    x = 69,193.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.