Home / 85,614.12-128,447.04-25,644.54

Finding the Fourth Proportional to 85,614.12, 128,447.04 and 25,644.54

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Solution

The fourth proportional to 85,614.12, 128,447.04 and 25,644.54 is: 38,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,614.12 : 128,447.04 = 25,644.54 : x
  2. Step 2: Convert to fraction form
    85,614.12/128,447.04 = 25,644.54/x
  3. Step 3: Cross multiply
    85,614.12x = 128,447.04 × 25,644.54
  4. Step 4: Simplify right side
    85,614.12x = 3,293,965,255.16
  5. Step 5: Solve for x
    x = 3,293,965,255.16/85,614.12
  6. Step 6: Final answer
    x = 38,474.56

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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.