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Finding the Fourth Proportional to 86,120.72, 118,849.17 and 47,356.54

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Solution

The fourth proportional to 86,120.72, 118,849.17 and 47,356.54 is: 65,353.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.72 : 118,849.17 = 47,356.54 : x
  2. Step 2: Convert to fraction form
    86,120.72/118,849.17 = 47,356.54/x
  3. Step 3: Cross multiply
    86,120.72x = 118,849.17 × 47,356.54
  4. Step 4: Simplify right side
    86,120.72x = 5,628,285,353.54
  5. Step 5: Solve for x
    x = 5,628,285,353.54/86,120.72
  6. Step 6: Final answer
    x = 65,353.44

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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.