Home / 90,122.34-124,369.64-49,838.82

Finding the Fourth Proportional to 90,122.34, 124,369.64 and 49,838.82

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Solution

The fourth proportional to 90,122.34, 124,369.64 and 49,838.82 is: 68,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,122.34 : 124,369.64 = 49,838.82 : x
  2. Step 2: Convert to fraction form
    90,122.34/124,369.64 = 49,838.82/x
  3. Step 3: Cross multiply
    90,122.34x = 124,369.64 × 49,838.82
  4. Step 4: Simplify right side
    90,122.34x = 6,198,435,479.58
  5. Step 5: Solve for x
    x = 6,198,435,479.58/90,122.34
  6. Step 6: Final answer
    x = 68,778.01

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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.