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Finding the Fourth Proportional to 66,958.16, 100,444.92 and 20,213.84

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Solution

The fourth proportional to 66,958.16, 100,444.92 and 20,213.84 is: 30,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,958.16 : 100,444.92 = 20,213.84 : x
  2. Step 2: Convert to fraction form
    66,958.16/100,444.92 = 20,213.84/x
  3. Step 3: Cross multiply
    66,958.16x = 100,444.92 × 20,213.84
  4. Step 4: Simplify right side
    66,958.16x = 2,030,377,541.69
  5. Step 5: Solve for x
    x = 2,030,377,541.69/66,958.16
  6. Step 6: Final answer
    x = 30,323.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.