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Finding the Fourth Proportional to 57,024, 85,574.88 and 20,088

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Solution

The fourth proportional to 57,024, 85,574.88 and 20,088 is: 30,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,024 : 85,574.88 = 20,088 : x
  2. Step 2: Convert to fraction form
    57,024/85,574.88 = 20,088/x
  3. Step 3: Cross multiply
    57,024x = 85,574.88 × 20,088
  4. Step 4: Simplify right side
    57,024x = 1,719,028,189.44
  5. Step 5: Solve for x
    x = 1,719,028,189.44/57,024
  6. Step 6: Final answer
    x = 30,145.70

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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.