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Finding the Fourth Proportional to 93,991.96, 129,709.54 and 51,550.79

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Solution

The fourth proportional to 93,991.96, 129,709.54 and 51,550.79 is: 71,140.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,991.96 : 129,709.54 = 51,550.79 : x
  2. Step 2: Convert to fraction form
    93,991.96/129,709.54 = 51,550.79/x
  3. Step 3: Cross multiply
    93,991.96x = 129,709.54 × 51,550.79
  4. Step 4: Simplify right side
    93,991.96x = 6,686,629,646.25
  5. Step 5: Solve for x
    x = 6,686,629,646.25/93,991.96
  6. Step 6: Final answer
    x = 71,140.44

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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.