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Finding the Fourth Proportional to 66,399.71, 91,628.33 and 36,184.93

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Solution

The fourth proportional to 66,399.71, 91,628.33 and 36,184.93 is: 49,933.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,399.71 : 91,628.33 = 36,184.93 : x
  2. Step 2: Convert to fraction form
    66,399.71/91,628.33 = 36,184.93/x
  3. Step 3: Cross multiply
    66,399.71x = 91,628.33 × 36,184.93
  4. Step 4: Simplify right side
    66,399.71x = 3,315,565,016.02
  5. Step 5: Solve for x
    x = 3,315,565,016.02/66,399.71
  6. Step 6: Final answer
    x = 49,933.43

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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.