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Finding the Fourth Proportional to 93,462, 128,975.90 and 53,174.90

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Solution

The fourth proportional to 93,462, 128,975.90 and 53,174.90 is: 73,380.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,462 : 128,975.90 = 53,174.90 : x
  2. Step 2: Convert to fraction form
    93,462/128,975.90 = 53,174.90/x
  3. Step 3: Cross multiply
    93,462x = 128,975.90 × 53,174.90
  4. Step 4: Simplify right side
    93,462x = 6,858,280,584.91
  5. Step 5: Solve for x
    x = 6,858,280,584.91/93,462
  6. Step 6: Final answer
    x = 73,380.42

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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.