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Finding the Fourth Proportional to 57,071.07, 85,585.32 and 19,620.54

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Solution

The fourth proportional to 57,071.07, 85,585.32 and 19,620.54 is: 29,423.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,071.07 : 85,585.32 = 19,620.54 : x
  2. Step 2: Convert to fraction form
    57,071.07/85,585.32 = 19,620.54/x
  3. Step 3: Cross multiply
    57,071.07x = 85,585.32 × 19,620.54
  4. Step 4: Simplify right side
    57,071.07x = 1,679,230,194.47
  5. Step 5: Solve for x
    x = 1,679,230,194.47/57,071.07
  6. Step 6: Final answer
    x = 29,423.49

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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.