Home / 56,142.72-84,190.05-18,692.64

Finding the Fourth Proportional to 56,142.72, 84,190.05 and 18,692.64

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Solution

The fourth proportional to 56,142.72, 84,190.05 and 18,692.64 is: 28,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,142.72 : 84,190.05 = 18,692.64 : x
  2. Step 2: Convert to fraction form
    56,142.72/84,190.05 = 18,692.64/x
  3. Step 3: Cross multiply
    56,142.72x = 84,190.05 × 18,692.64
  4. Step 4: Simplify right side
    56,142.72x = 1,573,734,296.23
  5. Step 5: Solve for x
    x = 1,573,734,296.23/56,142.72
  6. Step 6: Final answer
    x = 28,030.96

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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.