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Finding the Fourth Proportional to 86,214.76, 118,975.20 and 48,489.01

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Solution

The fourth proportional to 86,214.76, 118,975.20 and 48,489.01 is: 66,914.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,214.76 : 118,975.20 = 48,489.01 : x
  2. Step 2: Convert to fraction form
    86,214.76/118,975.20 = 48,489.01/x
  3. Step 3: Cross multiply
    86,214.76x = 118,975.20 × 48,489.01
  4. Step 4: Simplify right side
    86,214.76x = 5,768,989,067.68
  5. Step 5: Solve for x
    x = 5,768,989,067.68/86,214.76
  6. Step 6: Final answer
    x = 66,914.17

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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.