Home / 57,114.64-85,644.20-28,639.36

Finding the Fourth Proportional to 57,114.64, 85,644.20 and 28,639.36

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Solution

The fourth proportional to 57,114.64, 85,644.20 and 28,639.36 is: 42,945.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,114.64 : 85,644.20 = 28,639.36 : x
  2. Step 2: Convert to fraction form
    57,114.64/85,644.20 = 28,639.36/x
  3. Step 3: Cross multiply
    57,114.64x = 85,644.20 × 28,639.36
  4. Step 4: Simplify right side
    57,114.64x = 2,452,794,504.29
  5. Step 5: Solve for x
    x = 2,452,794,504.29/57,114.64
  6. Step 6: Final answer
    x = 42,945.11

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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.