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Finding the Fourth Proportional to 86,055, 118,761.96 and 48,329.28

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Solution

The fourth proportional to 86,055, 118,761.96 and 48,329.28 is: 66,697.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,055 : 118,761.96 = 48,329.28 : x
  2. Step 2: Convert to fraction form
    86,055/118,761.96 = 48,329.28/x
  3. Step 3: Cross multiply
    86,055x = 118,761.96 × 48,329.28
  4. Step 4: Simplify right side
    86,055x = 5,739,680,018.19
  5. Step 5: Solve for x
    x = 5,739,680,018.19/86,055
  6. Step 6: Final answer
    x = 66,697.81

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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.