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Finding the Fourth Proportional to 86,171.58, 118,913.67 and 48,449.34

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Solution

The fourth proportional to 86,171.58, 118,913.67 and 48,449.34 is: 66,858.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,171.58 : 118,913.67 = 48,449.34 : x
  2. Step 2: Convert to fraction form
    86,171.58/118,913.67 = 48,449.34/x
  3. Step 3: Cross multiply
    86,171.58x = 118,913.67 × 48,449.34
  4. Step 4: Simplify right side
    86,171.58x = 5,761,288,828.48
  5. Step 5: Solve for x
    x = 5,761,288,828.48/86,171.58
  6. Step 6: Final answer
    x = 66,858.34

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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.