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Finding the Fourth Proportional to 57,401.52, 86,099.92 and 19,970.08

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Solution

The fourth proportional to 57,401.52, 86,099.92 and 19,970.08 is: 29,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,401.52 : 86,099.92 = 19,970.08 : x
  2. Step 2: Convert to fraction form
    57,401.52/86,099.92 = 19,970.08/x
  3. Step 3: Cross multiply
    57,401.52x = 86,099.92 × 19,970.08
  4. Step 4: Simplify right side
    57,401.52x = 1,719,422,290.39
  5. Step 5: Solve for x
    x = 1,719,422,290.39/57,401.52
  6. Step 6: Final answer
    x = 29,954.30

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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.