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Finding the Fourth Proportional to 57,485.80, 86,228.73 and 15,932.80

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Solution

The fourth proportional to 57,485.80, 86,228.73 and 15,932.80 is: 23,899.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,485.80 : 86,228.73 = 15,932.80 : x
  2. Step 2: Convert to fraction form
    57,485.80/86,228.73 = 15,932.80/x
  3. Step 3: Cross multiply
    57,485.80x = 86,228.73 × 15,932.80
  4. Step 4: Simplify right side
    57,485.80x = 1,373,865,109.34
  5. Step 5: Solve for x
    x = 1,373,865,109.34/57,485.80
  6. Step 6: Final answer
    x = 23,899.21

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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.