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Finding the Fourth Proportional to 85,372.56, 117,772.92 and 53,529.84

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Solution

The fourth proportional to 85,372.56, 117,772.92 and 53,529.84 is: 73,845.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,372.56 : 117,772.92 = 53,529.84 : x
  2. Step 2: Convert to fraction form
    85,372.56/117,772.92 = 53,529.84/x
  3. Step 3: Cross multiply
    85,372.56x = 117,772.92 × 53,529.84
  4. Step 4: Simplify right side
    85,372.56x = 6,304,365,563.93
  5. Step 5: Solve for x
    x = 6,304,365,563.93/85,372.56
  6. Step 6: Final answer
    x = 73,845.34

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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.