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Finding the Fourth Proportional to 93,991.89, 129,708.87 and 51,550.59

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Solution

The fourth proportional to 93,991.89, 129,708.87 and 51,550.59 is: 71,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,991.89 : 129,708.87 = 51,550.59 : x
  2. Step 2: Convert to fraction form
    93,991.89/129,708.87 = 51,550.59/x
  3. Step 3: Cross multiply
    93,991.89x = 129,708.87 × 51,550.59
  4. Step 4: Simplify right side
    93,991.89x = 6,686,568,776.73
  5. Step 5: Solve for x
    x = 6,686,568,776.73/93,991.89
  6. Step 6: Final answer
    x = 71,139.85

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1.5x scale

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.