Home / 57,270.70-85,885.47-19,820.61

Finding the Fourth Proportional to 57,270.70, 85,885.47 and 19,820.61

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Solution

The fourth proportional to 57,270.70, 85,885.47 and 19,820.61 is: 29,723.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,270.70 : 85,885.47 = 19,820.61 : x
  2. Step 2: Convert to fraction form
    57,270.70/85,885.47 = 19,820.61/x
  3. Step 3: Cross multiply
    57,270.70x = 85,885.47 × 19,820.61
  4. Step 4: Simplify right side
    57,270.70x = 1,702,302,405.54
  5. Step 5: Solve for x
    x = 1,702,302,405.54/57,270.70
  6. Step 6: Final answer
    x = 29,723.79

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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.