Home / 90,121.96-124,369.11-49,838.45

Finding the Fourth Proportional to 90,121.96, 124,369.11 and 49,838.45

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Solution

The fourth proportional to 90,121.96, 124,369.11 and 49,838.45 is: 68,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,121.96 : 124,369.11 = 49,838.45 : x
  2. Step 2: Convert to fraction form
    90,121.96/124,369.11 = 49,838.45/x
  3. Step 3: Cross multiply
    90,121.96x = 124,369.11 × 49,838.45
  4. Step 4: Simplify right side
    90,121.96x = 6,198,363,670.28
  5. Step 5: Solve for x
    x = 6,198,363,670.28/90,121.96
  6. Step 6: Final answer
    x = 68,777.51

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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.