Home / 90,391.21-124,740.79-50,105.66

Finding the Fourth Proportional to 90,391.21, 124,740.79 and 50,105.66

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Solution

The fourth proportional to 90,391.21, 124,740.79 and 50,105.66 is: 69,146.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,391.21 : 124,740.79 = 50,105.66 : x
  2. Step 2: Convert to fraction form
    90,391.21/124,740.79 = 50,105.66/x
  3. Step 3: Cross multiply
    90,391.21x = 124,740.79 × 50,105.66
  4. Step 4: Simplify right side
    90,391.21x = 6,250,218,862.90
  5. Step 5: Solve for x
    x = 6,250,218,862.90/90,391.21
  6. Step 6: Final answer
    x = 69,146.31

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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.