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Finding the Fourth Proportional to 93,453.03, 128,960.67 and 53,163

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Solution

The fourth proportional to 93,453.03, 128,960.67 and 53,163 is: 73,362.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,453.03 : 128,960.67 = 53,163 : x
  2. Step 2: Convert to fraction form
    93,453.03/128,960.67 = 53,163/x
  3. Step 3: Cross multiply
    93,453.03x = 128,960.67 × 53,163
  4. Step 4: Simplify right side
    93,453.03x = 6,855,936,099.21
  5. Step 5: Solve for x
    x = 6,855,936,099.21/93,453.03
  6. Step 6: Final answer
    x = 73,362.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.