Home / 57,147.27-85,726.55-19,702.42

Finding the Fourth Proportional to 57,147.27, 85,726.55 and 19,702.42

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Solution

The fourth proportional to 57,147.27, 85,726.55 and 19,702.42 is: 29,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,147.27 : 85,726.55 = 19,702.42 : x
  2. Step 2: Convert to fraction form
    57,147.27/85,726.55 = 19,702.42/x
  3. Step 3: Cross multiply
    57,147.27x = 85,726.55 × 19,702.42
  4. Step 4: Simplify right side
    57,147.27x = 1,689,020,810.40
  5. Step 5: Solve for x
    x = 1,689,020,810.40/57,147.27
  6. Step 6: Final answer
    x = 29,555.58

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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.