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Finding the Fourth Proportional to 86,396.58, 119,212.79 and 48,147.74

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Solution

The fourth proportional to 86,396.58, 119,212.79 and 48,147.74 is: 66,435.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,396.58 : 119,212.79 = 48,147.74 : x
  2. Step 2: Convert to fraction form
    86,396.58/119,212.79 = 48,147.74/x
  3. Step 3: Cross multiply
    86,396.58x = 119,212.79 × 48,147.74
  4. Step 4: Simplify right side
    86,396.58x = 5,739,826,417.59
  5. Step 5: Solve for x
    x = 5,739,826,417.59/86,396.58
  6. Step 6: Final answer
    x = 66,435.81

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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.