Home / 81,617.10-122,425.65-52,092.60

Finding the Fourth Proportional to 81,617.10, 122,425.65 and 52,092.60

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Solution

The fourth proportional to 81,617.10, 122,425.65 and 52,092.60 is: 78,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,617.10 : 122,425.65 = 52,092.60 : x
  2. Step 2: Convert to fraction form
    81,617.10/122,425.65 = 52,092.60/x
  3. Step 3: Cross multiply
    81,617.10x = 122,425.65 × 52,092.60
  4. Step 4: Simplify right side
    81,617.10x = 6,377,470,415.19
  5. Step 5: Solve for x
    x = 6,377,470,415.19/81,617.10
  6. Step 6: Final answer
    x = 78,138.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.