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Finding the Fourth Proportional to 57,123.63, 85,536.41 and 45,969.39

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Solution

The fourth proportional to 57,123.63, 85,536.41 and 45,969.39 is: 68,834.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,123.63 : 85,536.41 = 45,969.39 : x
  2. Step 2: Convert to fraction form
    57,123.63/85,536.41 = 45,969.39/x
  3. Step 3: Cross multiply
    57,123.63x = 85,536.41 × 45,969.39
  4. Step 4: Simplify right side
    57,123.63x = 3,932,056,360.64
  5. Step 5: Solve for x
    x = 3,932,056,360.64/57,123.63
  6. Step 6: Final answer
    x = 68,834.15

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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.