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Finding the Fourth Proportional to 86,179.48, 118,919.14 and 53,907.86

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Solution

The fourth proportional to 86,179.48, 118,919.14 and 53,907.86 is: 74,387.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,179.48 : 118,919.14 = 53,907.86 : x
  2. Step 2: Convert to fraction form
    86,179.48/118,919.14 = 53,907.86/x
  3. Step 3: Cross multiply
    86,179.48x = 118,919.14 × 53,907.86
  4. Step 4: Simplify right side
    86,179.48x = 6,410,676,512.97
  5. Step 5: Solve for x
    x = 6,410,676,512.97/86,179.48
  6. Step 6: Final answer
    x = 74,387.51

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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.