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Finding the Fourth Proportional to 66,299.80, 91,503.37 and 37,231.43

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Solution

The fourth proportional to 66,299.80, 91,503.37 and 37,231.43 is: 51,384.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,299.80 : 91,503.37 = 37,231.43 : x
  2. Step 2: Convert to fraction form
    66,299.80/91,503.37 = 37,231.43/x
  3. Step 3: Cross multiply
    66,299.80x = 91,503.37 × 37,231.43
  4. Step 4: Simplify right side
    66,299.80x = 3,406,801,314.92
  5. Step 5: Solve for x
    x = 3,406,801,314.92/66,299.80
  6. Step 6: Final answer
    x = 51,384.79

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1.5x scale

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.