Home / 81,652.10-112,692.18-49,839.48

Finding the Fourth Proportional to 81,652.10, 112,692.18 and 49,839.48

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Solution

The fourth proportional to 81,652.10, 112,692.18 and 49,839.48 is: 68,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,652.10 : 112,692.18 = 49,839.48 : x
  2. Step 2: Convert to fraction form
    81,652.10/112,692.18 = 49,839.48/x
  3. Step 3: Cross multiply
    81,652.10x = 112,692.18 × 49,839.48
  4. Step 4: Simplify right side
    81,652.10x = 5,616,519,651.27
  5. Step 5: Solve for x
    x = 5,616,519,651.27/81,652.10
  6. Step 6: Final answer
    x = 68,785.98

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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.