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Finding the Fourth Proportional to 66,660.33, 91,990.21 and 36,444.94

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Solution

The fourth proportional to 66,660.33, 91,990.21 and 36,444.94 is: 50,293.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,660.33 : 91,990.21 = 36,444.94 : x
  2. Step 2: Convert to fraction form
    66,660.33/91,990.21 = 36,444.94/x
  3. Step 3: Cross multiply
    66,660.33x = 91,990.21 × 36,444.94
  4. Step 4: Simplify right side
    66,660.33x = 3,352,577,684.04
  5. Step 5: Solve for x
    x = 3,352,577,684.04/66,660.33
  6. Step 6: Final answer
    x = 50,293.45

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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.