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Finding the Fourth Proportional to 93,991.92, 129,707.91 and 51,551.16

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Solution

The fourth proportional to 93,991.92, 129,707.91 and 51,551.16 is: 71,140.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,991.92 : 129,707.91 = 51,551.16 : x
  2. Step 2: Convert to fraction form
    93,991.92/129,707.91 = 51,551.16/x
  3. Step 3: Cross multiply
    93,991.92x = 129,707.91 × 51,551.16
  4. Step 4: Simplify right side
    93,991.92x = 6,686,593,221.68
  5. Step 5: Solve for x
    x = 6,686,593,221.68/93,991.92
  6. Step 6: Final answer
    x = 71,140.09

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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.