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Finding the Fourth Proportional to 57,408.84, 79,271.46 and 54,473.40

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Solution

The fourth proportional to 57,408.84, 79,271.46 and 54,473.40 is: 75,218.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,408.84 : 79,271.46 = 54,473.40 : x
  2. Step 2: Convert to fraction form
    57,408.84/79,271.46 = 54,473.40/x
  3. Step 3: Cross multiply
    57,408.84x = 79,271.46 × 54,473.40
  4. Step 4: Simplify right side
    57,408.84x = 4,318,185,949.16
  5. Step 5: Solve for x
    x = 4,318,185,949.16/57,408.84
  6. Step 6: Final answer
    x = 75,218.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.