Home / 81,941.10-122,953.77-70,918.62

Finding the Fourth Proportional to 81,941.10, 122,953.77 and 70,918.62

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Solution

The fourth proportional to 81,941.10, 122,953.77 and 70,918.62 is: 106,414.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,941.10 : 122,953.77 = 70,918.62 : x
  2. Step 2: Convert to fraction form
    81,941.10/122,953.77 = 70,918.62/x
  3. Step 3: Cross multiply
    81,941.10x = 122,953.77 × 70,918.62
  4. Step 4: Simplify right side
    81,941.10x = 8,719,711,692.20
  5. Step 5: Solve for x
    x = 8,719,711,692.20/81,941.10
  6. Step 6: Final answer
    x = 106,414.38

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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.