Home / 57,147.47-85,726.84-19,702.61

Finding the Fourth Proportional to 57,147.47, 85,726.84 and 19,702.61

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Solution

The fourth proportional to 57,147.47, 85,726.84 and 19,702.61 is: 29,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,147.47 : 85,726.84 = 19,702.61 : x
  2. Step 2: Convert to fraction form
    57,147.47/85,726.84 = 19,702.61/x
  3. Step 3: Cross multiply
    57,147.47x = 85,726.84 × 19,702.61
  4. Step 4: Simplify right side
    57,147.47x = 1,689,042,017.16
  5. Step 5: Solve for x
    x = 1,689,042,017.16/57,147.47
  6. Step 6: Final answer
    x = 29,555.85

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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.