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Finding the Fourth Proportional to 86,171.60, 118,923.72 and 48,443.60

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Solution

The fourth proportional to 86,171.60, 118,923.72 and 48,443.60 is: 66,856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,171.60 : 118,923.72 = 48,443.60 : x
  2. Step 2: Convert to fraction form
    86,171.60/118,923.72 = 48,443.60/x
  3. Step 3: Cross multiply
    86,171.60x = 118,923.72 × 48,443.60
  4. Step 4: Simplify right side
    86,171.60x = 5,761,093,122.19
  5. Step 5: Solve for x
    x = 5,761,093,122.19/86,171.60
  6. Step 6: Final answer
    x = 66,856.05

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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.