Home / 42,122.88-63,190.08-18,748.80

Finding the Fourth Proportional to 42,122.88, 63,190.08 and 18,748.80

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Solution

The fourth proportional to 42,122.88, 63,190.08 and 18,748.80 is: 28,125.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,122.88 : 63,190.08 = 18,748.80 : x
  2. Step 2: Convert to fraction form
    42,122.88/63,190.08 = 18,748.80/x
  3. Step 3: Cross multiply
    42,122.88x = 63,190.08 × 18,748.80
  4. Step 4: Simplify right side
    42,122.88x = 1,184,738,171.90
  5. Step 5: Solve for x
    x = 1,184,738,171.90/42,122.88
  6. Step 6: Final answer
    x = 28,125.76

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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.