Home / 45,434.87-68,147.09-12,157.55

Finding the Fourth Proportional to 45,434.87, 68,147.09 and 12,157.55

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Solution

The fourth proportional to 45,434.87, 68,147.09 and 12,157.55 is: 18,234.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,434.87 : 68,147.09 = 12,157.55 : x
  2. Step 2: Convert to fraction form
    45,434.87/68,147.09 = 12,157.55/x
  3. Step 3: Cross multiply
    45,434.87x = 68,147.09 × 12,157.55
  4. Step 4: Simplify right side
    45,434.87x = 828,501,593.24
  5. Step 5: Solve for x
    x = 828,501,593.24/45,434.87
  6. Step 6: Final answer
    x = 18,234.93

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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.