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Finding the Fourth Proportional to 35,187.80, 52,757.90 and 18,530.20

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Solution

The fourth proportional to 35,187.80, 52,757.90 and 18,530.20 is: 27,782.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,187.80 : 52,757.90 = 18,530.20 : x
  2. Step 2: Convert to fraction form
    35,187.80/52,757.90 = 18,530.20/x
  3. Step 3: Cross multiply
    35,187.80x = 52,757.90 × 18,530.20
  4. Step 4: Simplify right side
    35,187.80x = 977,614,438.58
  5. Step 5: Solve for x
    x = 977,614,438.58/35,187.80
  6. Step 6: Final answer
    x = 27,782.77

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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.