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Finding the Fourth Proportional to 56,734.88, 85,108 and 21,704

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Solution

The fourth proportional to 56,734.88, 85,108 and 21,704 is: 32,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,734.88 : 85,108 = 21,704 : x
  2. Step 2: Convert to fraction form
    56,734.88/85,108 = 21,704/x
  3. Step 3: Cross multiply
    56,734.88x = 85,108 × 21,704
  4. Step 4: Simplify right side
    56,734.88x = 1,847,184,032
  5. Step 5: Solve for x
    x = 1,847,184,032/56,734.88
  6. Step 6: Final answer
    x = 32,558.17

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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.