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Finding the Fourth Proportional to 66,133.92, 91,220.40 and 40,995.84

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Solution

The fourth proportional to 66,133.92, 91,220.40 and 40,995.84 is: 56,546.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,133.92 : 91,220.40 = 40,995.84 : x
  2. Step 2: Convert to fraction form
    66,133.92/91,220.40 = 40,995.84/x
  3. Step 3: Cross multiply
    66,133.92x = 91,220.40 × 40,995.84
  4. Step 4: Simplify right side
    66,133.92x = 3,739,656,923.14
  5. Step 5: Solve for x
    x = 3,739,656,923.14/66,133.92
  6. Step 6: Final answer
    x = 56,546.73

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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.