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Finding the Fourth Proportional to 56,145.98, 84,190.80 and 18,692.84

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Solution

The fourth proportional to 56,145.98, 84,190.80 and 18,692.84 is: 28,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,145.98 : 84,190.80 = 18,692.84 : x
  2. Step 2: Convert to fraction form
    56,145.98/84,190.80 = 18,692.84/x
  3. Step 3: Cross multiply
    56,145.98x = 84,190.80 × 18,692.84
  4. Step 4: Simplify right side
    56,145.98x = 1,573,765,153.87
  5. Step 5: Solve for x
    x = 1,573,765,153.87/56,145.98
  6. Step 6: Final answer
    x = 28,029.88

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1.5x scale

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.