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Finding the Fourth Proportional to 85,694.71, 128,554.03 and 35,763.37

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Solution

The fourth proportional to 85,694.71, 128,554.03 and 35,763.37 is: 53,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,694.71 : 128,554.03 = 35,763.37 : x
  2. Step 2: Convert to fraction form
    85,694.71/128,554.03 = 35,763.37/x
  3. Step 3: Cross multiply
    85,694.71x = 128,554.03 × 35,763.37
  4. Step 4: Simplify right side
    85,694.71x = 4,597,524,929.09
  5. Step 5: Solve for x
    x = 4,597,524,929.09/85,694.71
  6. Step 6: Final answer
    x = 53,650.05

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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.