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Finding the Fourth Proportional to 57,192.90, 85,695.72 and 55,005.90

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Solution

The fourth proportional to 57,192.90, 85,695.72 and 55,005.90 is: 82,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,192.90 : 85,695.72 = 55,005.90 : x
  2. Step 2: Convert to fraction form
    57,192.90/85,695.72 = 55,005.90/x
  3. Step 3: Cross multiply
    57,192.90x = 85,695.72 × 55,005.90
  4. Step 4: Simplify right side
    57,192.90x = 4,713,770,204.75
  5. Step 5: Solve for x
    x = 4,713,770,204.75/57,192.90
  6. Step 6: Final answer
    x = 82,418.80

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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.