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Finding the Fourth Proportional to 57,755.58, 86,633.87 and 20,315.93

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Solution

The fourth proportional to 57,755.58, 86,633.87 and 20,315.93 is: 30,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,755.58 : 86,633.87 = 20,315.93 : x
  2. Step 2: Convert to fraction form
    57,755.58/86,633.87 = 20,315.93/x
  3. Step 3: Cross multiply
    57,755.58x = 86,633.87 × 20,315.93
  4. Step 4: Simplify right side
    57,755.58x = 1,760,047,103.80
  5. Step 5: Solve for x
    x = 1,760,047,103.80/57,755.58
  6. Step 6: Final answer
    x = 30,474.06

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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.