Home / 90,143.12-124,396.44-49,853.72

Finding the Fourth Proportional to 90,143.12, 124,396.44 and 49,853.72

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Solution

The fourth proportional to 90,143.12, 124,396.44 and 49,853.72 is: 68,797.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,143.12 : 124,396.44 = 49,853.72 : x
  2. Step 2: Convert to fraction form
    90,143.12/124,396.44 = 49,853.72/x
  3. Step 3: Cross multiply
    90,143.12x = 124,396.44 × 49,853.72
  4. Step 4: Simplify right side
    90,143.12x = 6,201,625,288.76
  5. Step 5: Solve for x
    x = 6,201,625,288.76/90,143.12
  6. Step 6: Final answer
    x = 68,797.54

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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.