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Finding the Fourth Proportional to 45,149.63, 67,728.90 and 15,563.57

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Solution

The fourth proportional to 45,149.63, 67,728.90 and 15,563.57 is: 23,346.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,149.63 : 67,728.90 = 15,563.57 : x
  2. Step 2: Convert to fraction form
    45,149.63/67,728.90 = 15,563.57/x
  3. Step 3: Cross multiply
    45,149.63x = 67,728.90 × 15,563.57
  4. Step 4: Simplify right side
    45,149.63x = 1,054,103,703.86
  5. Step 5: Solve for x
    x = 1,054,103,703.86/45,149.63
  6. Step 6: Final answer
    x = 23,346.89

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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.