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Finding the Fourth Proportional to 90,986.88, 136,480.32 and 35,544

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Solution

The fourth proportional to 90,986.88, 136,480.32 and 35,544 is: 53,316

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,986.88 : 136,480.32 = 35,544 : x
  2. Step 2: Convert to fraction form
    90,986.88/136,480.32 = 35,544/x
  3. Step 3: Cross multiply
    90,986.88x = 136,480.32 × 35,544
  4. Step 4: Simplify right side
    90,986.88x = 4,851,056,494.08
  5. Step 5: Solve for x
    x = 4,851,056,494.08/90,986.88
  6. Step 6: Final answer
    x = 53,316

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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.