Home / 90,204.40-124,479-49,919.86

Finding the Fourth Proportional to 90,204.40, 124,479 and 49,919.86

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Solution

The fourth proportional to 90,204.40, 124,479 and 49,919.86 is: 68,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,204.40 : 124,479 = 49,919.86 : x
  2. Step 2: Convert to fraction form
    90,204.40/124,479 = 49,919.86/x
  3. Step 3: Cross multiply
    90,204.40x = 124,479 × 49,919.86
  4. Step 4: Simplify right side
    90,204.40x = 6,213,973,630.55
  5. Step 5: Solve for x
    x = 6,213,973,630.55/90,204.40
  6. Step 6: Final answer
    x = 68,887.70

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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.