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Finding the Fourth Proportional to 57,406.80, 86,110.20 and 55,110.45

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Solution

The fourth proportional to 57,406.80, 86,110.20 and 55,110.45 is: 82,665.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,406.80 : 86,110.20 = 55,110.45 : x
  2. Step 2: Convert to fraction form
    57,406.80/86,110.20 = 55,110.45/x
  3. Step 3: Cross multiply
    57,406.80x = 86,110.20 × 55,110.45
  4. Step 4: Simplify right side
    57,406.80x = 4,745,571,871.59
  5. Step 5: Solve for x
    x = 4,745,571,871.59/57,406.80
  6. Step 6: Final answer
    x = 82,665.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.