Home / 85,927.20-128,781.45-41,458.20

Finding the Fourth Proportional to 85,927.20, 128,781.45 and 41,458.20

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Solution

The fourth proportional to 85,927.20, 128,781.45 and 41,458.20 is: 62,134.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,927.20 : 128,781.45 = 41,458.20 : x
  2. Step 2: Convert to fraction form
    85,927.20/128,781.45 = 41,458.20/x
  3. Step 3: Cross multiply
    85,927.20x = 128,781.45 × 41,458.20
  4. Step 4: Simplify right side
    85,927.20x = 5,339,047,110.39
  5. Step 5: Solve for x
    x = 5,339,047,110.39/85,927.20
  6. Step 6: Final answer
    x = 62,134.54

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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.