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Finding the Fourth Proportional to 57,877.80, 86,816.70 and 40,367.40

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Solution

The fourth proportional to 57,877.80, 86,816.70 and 40,367.40 is: 60,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,877.80 : 86,816.70 = 40,367.40 : x
  2. Step 2: Convert to fraction form
    57,877.80/86,816.70 = 40,367.40/x
  3. Step 3: Cross multiply
    57,877.80x = 86,816.70 × 40,367.40
  4. Step 4: Simplify right side
    57,877.80x = 3,504,564,455.58
  5. Step 5: Solve for x
    x = 3,504,564,455.58/57,877.80
  6. Step 6: Final answer
    x = 60,551.10

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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.