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Finding the Fourth Proportional to 45,407.88, 68,111.76 and 14,245.56

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Solution

The fourth proportional to 45,407.88, 68,111.76 and 14,245.56 is: 21,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,407.88 : 68,111.76 = 14,245.56 : x
  2. Step 2: Convert to fraction form
    45,407.88/68,111.76 = 14,245.56/x
  3. Step 3: Cross multiply
    45,407.88x = 68,111.76 × 14,245.56
  4. Step 4: Simplify right side
    45,407.88x = 970,290,163.79
  5. Step 5: Solve for x
    x = 970,290,163.79/45,407.88
  6. Step 6: Final answer
    x = 21,368.32

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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.