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Finding the Fourth Proportional to 78,325, 108,088.62 and 44,791.72

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Solution

The fourth proportional to 78,325, 108,088.62 and 44,791.72 is: 61,812.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,325 : 108,088.62 = 44,791.72 : x
  2. Step 2: Convert to fraction form
    78,325/108,088.62 = 44,791.72/x
  3. Step 3: Cross multiply
    78,325x = 108,088.62 × 44,791.72
  4. Step 4: Simplify right side
    78,325x = 4,841,475,202.23
  5. Step 5: Solve for x
    x = 4,841,475,202.23/78,325
  6. Step 6: Final answer
    x = 61,812.64

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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.