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Finding the Fourth Proportional to 90,843.36, 136,265.06 and 40,865.06

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Solution

The fourth proportional to 90,843.36, 136,265.06 and 40,865.06 is: 61,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,843.36 : 136,265.06 = 40,865.06 : x
  2. Step 2: Convert to fraction form
    90,843.36/136,265.06 = 40,865.06/x
  3. Step 3: Cross multiply
    90,843.36x = 136,265.06 × 40,865.06
  4. Step 4: Simplify right side
    90,843.36x = 5,568,479,852.80
  5. Step 5: Solve for x
    x = 5,568,479,852.80/90,843.36
  6. Step 6: Final answer
    x = 61,297.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.