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Finding the Fourth Proportional to 85,857.26, 128,805.52 and 29,697.32

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Solution

The fourth proportional to 85,857.26, 128,805.52 and 29,697.32 is: 44,552.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,857.26 : 128,805.52 = 29,697.32 : x
  2. Step 2: Convert to fraction form
    85,857.26/128,805.52 = 29,697.32/x
  3. Step 3: Cross multiply
    85,857.26x = 128,805.52 × 29,697.32
  4. Step 4: Simplify right side
    85,857.26x = 3,825,178,745.21
  5. Step 5: Solve for x
    x = 3,825,178,745.21/85,857.26
  6. Step 6: Final answer
    x = 44,552.77

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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.