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Finding the Fourth Proportional to 45,611.62, 68,415.40 and 14,020.40

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Solution

The fourth proportional to 45,611.62, 68,415.40 and 14,020.40 is: 21,029.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,611.62 : 68,415.40 = 14,020.40 : x
  2. Step 2: Convert to fraction form
    45,611.62/68,415.40 = 14,020.40/x
  3. Step 3: Cross multiply
    45,611.62x = 68,415.40 × 14,020.40
  4. Step 4: Simplify right side
    45,611.62x = 959,211,274.16
  5. Step 5: Solve for x
    x = 959,211,274.16/45,611.62
  6. Step 6: Final answer
    x = 21,029.98

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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.