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Finding the Fourth Proportional to 57,019.84, 85,410.24 and 36,139.84

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Solution

The fourth proportional to 57,019.84, 85,410.24 and 36,139.84 is: 54,134.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,019.84 : 85,410.24 = 36,139.84 : x
  2. Step 2: Convert to fraction form
    57,019.84/85,410.24 = 36,139.84/x
  3. Step 3: Cross multiply
    57,019.84x = 85,410.24 × 36,139.84
  4. Step 4: Simplify right side
    57,019.84x = 3,086,712,407.96
  5. Step 5: Solve for x
    x = 3,086,712,407.96/57,019.84
  6. Step 6: Final answer
    x = 54,134.01

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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.