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Finding the Fourth Proportional to 78,272.75, 108,009.01 and 44,277.05

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Solution

The fourth proportional to 78,272.75, 108,009.01 and 44,277.05 is: 61,098.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,272.75 : 108,009.01 = 44,277.05 : x
  2. Step 2: Convert to fraction form
    78,272.75/108,009.01 = 44,277.05/x
  3. Step 3: Cross multiply
    78,272.75x = 108,009.01 × 44,277.05
  4. Step 4: Simplify right side
    78,272.75x = 4,782,320,661.59
  5. Step 5: Solve for x
    x = 4,782,320,661.59/78,272.75
  6. Step 6: Final answer
    x = 61,098.15

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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.