Home / 99,965.28-149,947.94-40,828.80

Finding the Fourth Proportional to 99,965.28, 149,947.94 and 40,828.80

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Solution

The fourth proportional to 99,965.28, 149,947.94 and 40,828.80 is: 61,243.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,965.28 : 149,947.94 = 40,828.80 : x
  2. Step 2: Convert to fraction form
    99,965.28/149,947.94 = 40,828.80/x
  3. Step 3: Cross multiply
    99,965.28x = 149,947.94 × 40,828.80
  4. Step 4: Simplify right side
    99,965.28x = 6,122,194,452.67
  5. Step 5: Solve for x
    x = 6,122,194,452.67/99,965.28
  6. Step 6: Final answer
    x = 61,243.21

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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.