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Finding the Fourth Proportional to 57,283.33, 85,913.87 and 28,812.69

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Solution

The fourth proportional to 57,283.33, 85,913.87 and 28,812.69 is: 43,213.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,283.33 : 85,913.87 = 28,812.69 : x
  2. Step 2: Convert to fraction form
    57,283.33/85,913.87 = 28,812.69/x
  3. Step 3: Cross multiply
    57,283.33x = 85,913.87 × 28,812.69
  4. Step 4: Simplify right side
    57,283.33x = 2,475,409,703.01
  5. Step 5: Solve for x
    x = 2,475,409,703.01/57,283.33
  6. Step 6: Final answer
    x = 43,213.44

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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.