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Finding the Fourth Proportional to 66,891.80, 100,338.32 and 28,933.99

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Solution

The fourth proportional to 66,891.80, 100,338.32 and 28,933.99 is: 43,401.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,891.80 : 100,338.32 = 28,933.99 : x
  2. Step 2: Convert to fraction form
    66,891.80/100,338.32 = 28,933.99/x
  3. Step 3: Cross multiply
    66,891.80x = 100,338.32 × 28,933.99
  4. Step 4: Simplify right side
    66,891.80x = 2,903,187,768.99
  5. Step 5: Solve for x
    x = 2,903,187,768.99/66,891.80
  6. Step 6: Final answer
    x = 43,401.25

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1.5x scale

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.