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Finding the Fourth Proportional to 45,157.50, 67,736.25 and 12,325.50

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Solution

The fourth proportional to 45,157.50, 67,736.25 and 12,325.50 is: 18,488.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,157.50 : 67,736.25 = 12,325.50 : x
  2. Step 2: Convert to fraction form
    45,157.50/67,736.25 = 12,325.50/x
  3. Step 3: Cross multiply
    45,157.50x = 67,736.25 × 12,325.50
  4. Step 4: Simplify right side
    45,157.50x = 834,883,149.38
  5. Step 5: Solve for x
    x = 834,883,149.38/45,157.50
  6. Step 6: Final answer
    x = 18,488.25

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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.