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Finding the Fourth Proportional to 85,395.54, 128,093.69 and 35,475.60

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Solution

The fourth proportional to 85,395.54, 128,093.69 and 35,475.60 is: 53,213.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,395.54 : 128,093.69 = 35,475.60 : x
  2. Step 2: Convert to fraction form
    85,395.54/128,093.69 = 35,475.60/x
  3. Step 3: Cross multiply
    85,395.54x = 128,093.69 × 35,475.60
  4. Step 4: Simplify right side
    85,395.54x = 4,544,199,691.12
  5. Step 5: Solve for x
    x = 4,544,199,691.12/85,395.54
  6. Step 6: Final answer
    x = 53,213.55

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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.