Home / 85,441.78-128,174.92-26,282.44

Finding the Fourth Proportional to 85,441.78, 128,174.92 and 26,282.44

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Solution

The fourth proportional to 85,441.78, 128,174.92 and 26,282.44 is: 39,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,441.78 : 128,174.92 = 26,282.44 : x
  2. Step 2: Convert to fraction form
    85,441.78/128,174.92 = 26,282.44/x
  3. Step 3: Cross multiply
    85,441.78x = 128,174.92 × 26,282.44
  4. Step 4: Simplify right side
    85,441.78x = 3,368,749,644.40
  5. Step 5: Solve for x
    x = 3,368,749,644.40/85,441.78
  6. Step 6: Final answer
    x = 39,427.43

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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.