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Finding the Fourth Proportional to 45,930.40, 68,905.20 and 14,768.80

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Solution

The fourth proportional to 45,930.40, 68,905.20 and 14,768.80 is: 22,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,930.40 : 68,905.20 = 14,768.80 : x
  2. Step 2: Convert to fraction form
    45,930.40/68,905.20 = 14,768.80/x
  3. Step 3: Cross multiply
    45,930.40x = 68,905.20 × 14,768.80
  4. Step 4: Simplify right side
    45,930.40x = 1,017,647,117.76
  5. Step 5: Solve for x
    x = 1,017,647,117.76/45,930.40
  6. Step 6: Final answer
    x = 22,156.29

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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.