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Finding the Fourth Proportional to 57,026.88, 85,534.56 and 20,088

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Solution

The fourth proportional to 57,026.88, 85,534.56 and 20,088 is: 30,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,026.88 : 85,534.56 = 20,088 : x
  2. Step 2: Convert to fraction form
    57,026.88/85,534.56 = 20,088/x
  3. Step 3: Cross multiply
    57,026.88x = 85,534.56 × 20,088
  4. Step 4: Simplify right side
    57,026.88x = 1,718,218,241.28
  5. Step 5: Solve for x
    x = 1,718,218,241.28/57,026.88
  6. Step 6: Final answer
    x = 30,129.97

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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.