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Finding the Fourth Proportional to 52,995.57, 79,462.82 and 21,420.75

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Solution

The fourth proportional to 52,995.57, 79,462.82 and 21,420.75 is: 32,118.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,995.57 : 79,462.82 = 21,420.75 : x
  2. Step 2: Convert to fraction form
    52,995.57/79,462.82 = 21,420.75/x
  3. Step 3: Cross multiply
    52,995.57x = 79,462.82 × 21,420.75
  4. Step 4: Simplify right side
    52,995.57x = 1,702,153,553.05
  5. Step 5: Solve for x
    x = 1,702,153,553.05/52,995.57
  6. Step 6: Final answer
    x = 32,118.79

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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.