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Finding the Fourth Proportional to 85,157.47, 127,623.03 and 45,168.22

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Solution

The fourth proportional to 85,157.47, 127,623.03 and 45,168.22 is: 67,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.47 : 127,623.03 = 45,168.22 : x
  2. Step 2: Convert to fraction form
    85,157.47/127,623.03 = 45,168.22/x
  3. Step 3: Cross multiply
    85,157.47x = 127,623.03 × 45,168.22
  4. Step 4: Simplify right side
    85,157.47x = 5,764,505,096.11
  5. Step 5: Solve for x
    x = 5,764,505,096.11/85,157.47
  6. Step 6: Final answer
    x = 67,692.30

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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.