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Finding the Fourth Proportional to 57,392.70, 86,101.20 and 17,408.40

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Solution

The fourth proportional to 57,392.70, 86,101.20 and 17,408.40 is: 26,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,392.70 : 86,101.20 = 17,408.40 : x
  2. Step 2: Convert to fraction form
    57,392.70/86,101.20 = 17,408.40/x
  3. Step 3: Cross multiply
    57,392.70x = 86,101.20 × 17,408.40
  4. Step 4: Simplify right side
    57,392.70x = 1,498,884,130.08
  5. Step 5: Solve for x
    x = 1,498,884,130.08/57,392.70
  6. Step 6: Final answer
    x = 26,116.29

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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.