Home / 90,409.03-124,764.26-50,121.76

Finding the Fourth Proportional to 90,409.03, 124,764.26 and 50,121.76

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Solution

The fourth proportional to 90,409.03, 124,764.26 and 50,121.76 is: 69,167.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,409.03 : 124,764.26 = 50,121.76 : x
  2. Step 2: Convert to fraction form
    90,409.03/124,764.26 = 50,121.76/x
  3. Step 3: Cross multiply
    90,409.03x = 124,764.26 × 50,121.76
  4. Step 4: Simplify right side
    90,409.03x = 6,253,403,421.87
  5. Step 5: Solve for x
    x = 6,253,403,421.87/90,409.03
  6. Step 6: Final answer
    x = 69,167.91

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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.