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Finding the Fourth Proportional to 56,758.80, 85,137.96 and 17,315.80

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Solution

The fourth proportional to 56,758.80, 85,137.96 and 17,315.80 is: 25,973.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,758.80 : 85,137.96 = 17,315.80 : x
  2. Step 2: Convert to fraction form
    56,758.80/85,137.96 = 17,315.80/x
  3. Step 3: Cross multiply
    56,758.80x = 85,137.96 × 17,315.80
  4. Step 4: Simplify right side
    56,758.80x = 1,474,231,887.77
  5. Step 5: Solve for x
    x = 1,474,231,887.77/56,758.80
  6. Step 6: Final answer
    x = 25,973.63

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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.