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Finding the Fourth Proportional to 66,869.34, 100,260.81 and 33,570.78

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Solution

The fourth proportional to 66,869.34, 100,260.81 and 33,570.78 is: 50,334.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869.34 : 100,260.81 = 33,570.78 : x
  2. Step 2: Convert to fraction form
    66,869.34/100,260.81 = 33,570.78/x
  3. Step 3: Cross multiply
    66,869.34x = 100,260.81 × 33,570.78
  4. Step 4: Simplify right side
    66,869.34x = 3,365,833,595.13
  5. Step 5: Solve for x
    x = 3,365,833,595.13/66,869.34
  6. Step 6: Final answer
    x = 50,334.48

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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.