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Finding the Fourth Proportional to 45,915.70, 68,861.40 and 14,325.70

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Solution

The fourth proportional to 45,915.70, 68,861.40 and 14,325.70 is: 21,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,915.70 : 68,861.40 = 14,325.70 : x
  2. Step 2: Convert to fraction form
    45,915.70/68,861.40 = 14,325.70/x
  3. Step 3: Cross multiply
    45,915.70x = 68,861.40 × 14,325.70
  4. Step 4: Simplify right side
    45,915.70x = 986,487,757.98
  5. Step 5: Solve for x
    x = 986,487,757.98/45,915.70
  6. Step 6: Final answer
    x = 21,484.76

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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.