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Finding the Fourth Proportional to 66,507.81, 91,777.91 and 36,292.38

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Solution

The fourth proportional to 66,507.81, 91,777.91 and 36,292.38 is: 50,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,507.81 : 91,777.91 = 36,292.38 : x
  2. Step 2: Convert to fraction form
    66,507.81/91,777.91 = 36,292.38/x
  3. Step 3: Cross multiply
    66,507.81x = 91,777.91 × 36,292.38
  4. Step 4: Simplify right side
    66,507.81x = 3,330,838,785.33
  5. Step 5: Solve for x
    x = 3,330,838,785.33/66,507.81
  6. Step 6: Final answer
    x = 50,081.92

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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.