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Finding the Fourth Proportional to 103,785.78, 155,700.54 and 33,659.64

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Solution

The fourth proportional to 103,785.78, 155,700.54 and 33,659.64 is: 50,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,785.78 : 155,700.54 = 33,659.64 : x
  2. Step 2: Convert to fraction form
    103,785.78/155,700.54 = 33,659.64/x
  3. Step 3: Cross multiply
    103,785.78x = 155,700.54 × 33,659.64
  4. Step 4: Simplify right side
    103,785.78x = 5,240,824,124.21
  5. Step 5: Solve for x
    x = 5,240,824,124.21/103,785.78
  6. Step 6: Final answer
    x = 50,496.55

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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.