Home / 91,640.19-137,481.84-28,457.13

Finding the Fourth Proportional to 91,640.19, 137,481.84 and 28,457.13

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Solution

The fourth proportional to 91,640.19, 137,481.84 and 28,457.13 is: 42,692.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,640.19 : 137,481.84 = 28,457.13 : x
  2. Step 2: Convert to fraction form
    91,640.19/137,481.84 = 28,457.13/x
  3. Step 3: Cross multiply
    91,640.19x = 137,481.84 × 28,457.13
  4. Step 4: Simplify right side
    91,640.19x = 3,912,338,593.52
  5. Step 5: Solve for x
    x = 3,912,338,593.52/91,640.19
  6. Step 6: Final answer
    x = 42,692.39

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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.