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Finding the Fourth Proportional to 57,662.40, 86,320.80 and 54,244.80

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Solution

The fourth proportional to 57,662.40, 86,320.80 and 54,244.80 is: 81,204.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,662.40 : 86,320.80 = 54,244.80 : x
  2. Step 2: Convert to fraction form
    57,662.40/86,320.80 = 54,244.80/x
  3. Step 3: Cross multiply
    57,662.40x = 86,320.80 × 54,244.80
  4. Step 4: Simplify right side
    57,662.40x = 4,682,454,531.84
  5. Step 5: Solve for x
    x = 4,682,454,531.84/57,662.40
  6. Step 6: Final answer
    x = 81,204.64

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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.