Home / 90,991.10-125,568-52,758.15

Finding the Fourth Proportional to 90,991.10, 125,568 and 52,758.15

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Solution

The fourth proportional to 90,991.10, 125,568 and 52,758.15 is: 72,806.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991.10 : 125,568 = 52,758.15 : x
  2. Step 2: Convert to fraction form
    90,991.10/125,568 = 52,758.15/x
  3. Step 3: Cross multiply
    90,991.10x = 125,568 × 52,758.15
  4. Step 4: Simplify right side
    90,991.10x = 6,624,735,379.20
  5. Step 5: Solve for x
    x = 6,624,735,379.20/90,991.10
  6. Step 6: Final answer
    x = 72,806.41

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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.