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Finding the Fourth Proportional to 85,073.57, 127,622.03 and 28,898.60

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Solution

The fourth proportional to 85,073.57, 127,622.03 and 28,898.60 is: 43,351.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,073.57 : 127,622.03 = 28,898.60 : x
  2. Step 2: Convert to fraction form
    85,073.57/127,622.03 = 28,898.60/x
  3. Step 3: Cross multiply
    85,073.57x = 127,622.03 × 28,898.60
  4. Step 4: Simplify right side
    85,073.57x = 3,688,097,996.16
  5. Step 5: Solve for x
    x = 3,688,097,996.16/85,073.57
  6. Step 6: Final answer
    x = 43,351.87

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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.