Home / 90,122.37-124,369.68-49,838.86

Finding the Fourth Proportional to 90,122.37, 124,369.68 and 49,838.86

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Solution

The fourth proportional to 90,122.37, 124,369.68 and 49,838.86 is: 68,778.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,122.37 : 124,369.68 = 49,838.86 : x
  2. Step 2: Convert to fraction form
    90,122.37/124,369.68 = 49,838.86/x
  3. Step 3: Cross multiply
    90,122.37x = 124,369.68 × 49,838.86
  4. Step 4: Simplify right side
    90,122.37x = 6,198,443,069.76
  5. Step 5: Solve for x
    x = 6,198,443,069.76/90,122.37
  6. Step 6: Final answer
    x = 68,778.07

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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.