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Finding the Fourth Proportional to 86,387.70, 119,212.83 and 48,147.42

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Solution

The fourth proportional to 86,387.70, 119,212.83 and 48,147.42 is: 66,442.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,387.70 : 119,212.83 = 48,147.42 : x
  2. Step 2: Convert to fraction form
    86,387.70/119,212.83 = 48,147.42/x
  3. Step 3: Cross multiply
    86,387.70x = 119,212.83 × 48,147.42
  4. Step 4: Simplify right side
    86,387.70x = 5,739,790,195.40
  5. Step 5: Solve for x
    x = 5,739,790,195.40/86,387.70
  6. Step 6: Final answer
    x = 66,442.22

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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.