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Finding the Fourth Proportional to 86,008.87, 118,688.24 and 47,770.86

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Solution

The fourth proportional to 86,008.87, 118,688.24 and 47,770.86 is: 65,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,008.87 : 118,688.24 = 47,770.86 : x
  2. Step 2: Convert to fraction form
    86,008.87/118,688.24 = 47,770.86/x
  3. Step 3: Cross multiply
    86,008.87x = 118,688.24 × 47,770.86
  4. Step 4: Simplify right side
    86,008.87x = 5,669,839,296.69
  5. Step 5: Solve for x
    x = 5,669,839,296.69/86,008.87
  6. Step 6: Final answer
    x = 65,921.56

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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.