Home / 57,146.72-85,724.19-19,706.26

Finding the Fourth Proportional to 57,146.72, 85,724.19 and 19,706.26

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Solution

The fourth proportional to 57,146.72, 85,724.19 and 19,706.26 is: 29,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,146.72 : 85,724.19 = 19,706.26 : x
  2. Step 2: Convert to fraction form
    57,146.72/85,724.19 = 19,706.26/x
  3. Step 3: Cross multiply
    57,146.72x = 85,724.19 × 19,706.26
  4. Step 4: Simplify right side
    57,146.72x = 1,689,302,904.61
  5. Step 5: Solve for x
    x = 1,689,302,904.61/57,146.72
  6. Step 6: Final answer
    x = 29,560.80

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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.