Home / 90,371.07-124,713-50,085.72

Finding the Fourth Proportional to 90,371.07, 124,713 and 50,085.72

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Solution

The fourth proportional to 90,371.07, 124,713 and 50,085.72 is: 69,118.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,371.07 : 124,713 = 50,085.72 : x
  2. Step 2: Convert to fraction form
    90,371.07/124,713 = 50,085.72/x
  3. Step 3: Cross multiply
    90,371.07x = 124,713 × 50,085.72
  4. Step 4: Simplify right side
    90,371.07x = 6,246,340,398.36
  5. Step 5: Solve for x
    x = 6,246,340,398.36/90,371.07
  6. Step 6: Final answer
    x = 69,118.81

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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.