Home / 90,212.20-124,500.90-49,935.40

Finding the Fourth Proportional to 90,212.20, 124,500.90 and 49,935.40

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Solution

The fourth proportional to 90,212.20, 124,500.90 and 49,935.40 is: 68,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,212.20 : 124,500.90 = 49,935.40 : x
  2. Step 2: Convert to fraction form
    90,212.20/124,500.90 = 49,935.40/x
  3. Step 3: Cross multiply
    90,212.20x = 124,500.90 × 49,935.40
  4. Step 4: Simplify right side
    90,212.20x = 6,217,002,241.86
  5. Step 5: Solve for x
    x = 6,217,002,241.86/90,212.20
  6. Step 6: Final answer
    x = 68,915.32

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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.