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Finding the Fourth Proportional to 85,424.58, 117,879.17 and 49,608.74

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Solution

The fourth proportional to 85,424.58, 117,879.17 and 49,608.74 is: 68,456.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,424.58 : 117,879.17 = 49,608.74 : x
  2. Step 2: Convert to fraction form
    85,424.58/117,879.17 = 49,608.74/x
  3. Step 3: Cross multiply
    85,424.58x = 117,879.17 × 49,608.74
  4. Step 4: Simplify right side
    85,424.58x = 5,847,837,095.95
  5. Step 5: Solve for x
    x = 5,847,837,095.95/85,424.58
  6. Step 6: Final answer
    x = 68,456.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.