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Finding the Fourth Proportional to 66,750.56, 100,113.08 and 20,003.43

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Solution

The fourth proportional to 66,750.56, 100,113.08 and 20,003.43 is: 30,001.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,750.56 : 100,113.08 = 20,003.43 : x
  2. Step 2: Convert to fraction form
    66,750.56/100,113.08 = 20,003.43/x
  3. Step 3: Cross multiply
    66,750.56x = 100,113.08 × 20,003.43
  4. Step 4: Simplify right side
    66,750.56x = 2,002,605,009.83
  5. Step 5: Solve for x
    x = 2,002,605,009.83/66,750.56
  6. Step 6: Final answer
    x = 30,001.32

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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.