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Finding the Fourth Proportional to 85,755.64, 128,610.22 and 35,825.29

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Solution

The fourth proportional to 85,755.64, 128,610.22 and 35,825.29 is: 53,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,755.64 : 128,610.22 = 35,825.29 : x
  2. Step 2: Convert to fraction form
    85,755.64/128,610.22 = 35,825.29/x
  3. Step 3: Cross multiply
    85,755.64x = 128,610.22 × 35,825.29
  4. Step 4: Simplify right side
    85,755.64x = 4,607,498,034.17
  5. Step 5: Solve for x
    x = 4,607,498,034.17/85,755.64
  6. Step 6: Final answer
    x = 53,728.22

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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.