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Finding the Fourth Proportional to 86,132.78, 118,867.21 and 47,896.20

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Solution

The fourth proportional to 86,132.78, 118,867.21 and 47,896.20 is: 66,098.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,132.78 : 118,867.21 = 47,896.20 : x
  2. Step 2: Convert to fraction form
    86,132.78/118,867.21 = 47,896.20/x
  3. Step 3: Cross multiply
    86,132.78x = 118,867.21 × 47,896.20
  4. Step 4: Simplify right side
    86,132.78x = 5,693,287,543.86
  5. Step 5: Solve for x
    x = 5,693,287,543.86/86,132.78
  6. Step 6: Final answer
    x = 66,098.97

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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.