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Finding the Fourth Proportional to 57,310.40, 85,989.90 and 36,266.60

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Solution

The fourth proportional to 57,310.40, 85,989.90 and 36,266.60 is: 54,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,310.40 : 85,989.90 = 36,266.60 : x
  2. Step 2: Convert to fraction form
    57,310.40/85,989.90 = 36,266.60/x
  3. Step 3: Cross multiply
    57,310.40x = 85,989.90 × 36,266.60
  4. Step 4: Simplify right side
    57,310.40x = 3,118,561,307.34
  5. Step 5: Solve for x
    x = 3,118,561,307.34/57,310.40
  6. Step 6: Final answer
    x = 54,415.28

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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.