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Finding the Fourth Proportional to 57,072.57, 85,587.57 and 19,622.04

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Solution

The fourth proportional to 57,072.57, 85,587.57 and 19,622.04 is: 29,425.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,072.57 : 85,587.57 = 19,622.04 : x
  2. Step 2: Convert to fraction form
    57,072.57/85,587.57 = 19,622.04/x
  3. Step 3: Cross multiply
    57,072.57x = 85,587.57 × 19,622.04
  4. Step 4: Simplify right side
    57,072.57x = 1,679,402,722.04
  5. Step 5: Solve for x
    x = 1,679,402,722.04/57,072.57
  6. Step 6: Final answer
    x = 29,425.74

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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.