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Finding the Fourth Proportional to 57,148.52, 85,726.89 and 19,708.05

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Solution

The fourth proportional to 57,148.52, 85,726.89 and 19,708.05 is: 29,563.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,148.52 : 85,726.89 = 19,708.05 : x
  2. Step 2: Convert to fraction form
    57,148.52/85,726.89 = 19,708.05/x
  3. Step 3: Cross multiply
    57,148.52x = 85,726.89 × 19,708.05
  4. Step 4: Simplify right side
    57,148.52x = 1,689,509,760.56
  5. Step 5: Solve for x
    x = 1,689,509,760.56/57,148.52
  6. Step 6: Final answer
    x = 29,563.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.