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Finding the Fourth Proportional to 45,405.50, 68,108.26 and 12,573.50

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Solution

The fourth proportional to 45,405.50, 68,108.26 and 12,573.50 is: 18,860.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,405.50 : 68,108.26 = 12,573.50 : x
  2. Step 2: Convert to fraction form
    45,405.50/68,108.26 = 12,573.50/x
  3. Step 3: Cross multiply
    45,405.50x = 68,108.26 × 12,573.50
  4. Step 4: Simplify right side
    45,405.50x = 856,359,207.11
  5. Step 5: Solve for x
    x = 856,359,207.11/45,405.50
  6. Step 6: Final answer
    x = 18,860.25

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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.