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Finding the Fourth Proportional to 93,453.90, 128,961.87 and 53,163.87

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Solution

The fourth proportional to 93,453.90, 128,961.87 and 53,163.87 is: 73,363.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,453.90 : 128,961.87 = 53,163.87 : x
  2. Step 2: Convert to fraction form
    93,453.90/128,961.87 = 53,163.87/x
  3. Step 3: Cross multiply
    93,453.90x = 128,961.87 × 53,163.87
  4. Step 4: Simplify right side
    93,453.90x = 6,856,112,091.64
  5. Step 5: Solve for x
    x = 6,856,112,091.64/93,453.90
  6. Step 6: Final answer
    x = 73,363.57

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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.