Home / 90,126.10-124,371.78-49,838.80

Finding the Fourth Proportional to 90,126.10, 124,371.78 and 49,838.80

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Solution

The fourth proportional to 90,126.10, 124,371.78 and 49,838.80 is: 68,776.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,126.10 : 124,371.78 = 49,838.80 : x
  2. Step 2: Convert to fraction form
    90,126.10/124,371.78 = 49,838.80/x
  3. Step 3: Cross multiply
    90,126.10x = 124,371.78 × 49,838.80
  4. Step 4: Simplify right side
    90,126.10x = 6,198,540,269.06
  5. Step 5: Solve for x
    x = 6,198,540,269.06/90,126.10
  6. Step 6: Final answer
    x = 68,776.31

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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.