Home / 90,405.15-124,758.52-50,118.90

Finding the Fourth Proportional to 90,405.15, 124,758.52 and 50,118.90

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Solution

The fourth proportional to 90,405.15, 124,758.52 and 50,118.90 is: 69,163.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,405.15 : 124,758.52 = 50,118.90 : x
  2. Step 2: Convert to fraction form
    90,405.15/124,758.52 = 50,118.90/x
  3. Step 3: Cross multiply
    90,405.15x = 124,758.52 × 50,118.90
  4. Step 4: Simplify right side
    90,405.15x = 6,252,759,788.03
  5. Step 5: Solve for x
    x = 6,252,759,788.03/90,405.15
  6. Step 6: Final answer
    x = 69,163.76

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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.