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Finding the Fourth Proportional to 86,059.86, 118,750.05 and 48,331.86

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Solution

The fourth proportional to 86,059.86, 118,750.05 and 48,331.86 is: 66,690.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,059.86 : 118,750.05 = 48,331.86 : x
  2. Step 2: Convert to fraction form
    86,059.86/118,750.05 = 48,331.86/x
  3. Step 3: Cross multiply
    86,059.86x = 118,750.05 × 48,331.86
  4. Step 4: Simplify right side
    86,059.86x = 5,739,410,791.59
  5. Step 5: Solve for x
    x = 5,739,410,791.59/86,059.86
  6. Step 6: Final answer
    x = 66,690.91

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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.