Home / 90,879.12-136,146.96-51,464.52

Finding the Fourth Proportional to 90,879.12, 136,146.96 and 51,464.52

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Solution

The fourth proportional to 90,879.12, 136,146.96 and 51,464.52 is: 77,099.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,879.12 : 136,146.96 = 51,464.52 : x
  2. Step 2: Convert to fraction form
    90,879.12/136,146.96 = 51,464.52/x
  3. Step 3: Cross multiply
    90,879.12x = 136,146.96 × 51,464.52
  4. Step 4: Simplify right side
    90,879.12x = 7,006,737,945.86
  5. Step 5: Solve for x
    x = 7,006,737,945.86/90,879.12
  6. Step 6: Final answer
    x = 77,099.54

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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.