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Finding the Fourth Proportional to 45,879.34, 68,818.86 and 12,599.44

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Solution

The fourth proportional to 45,879.34, 68,818.86 and 12,599.44 is: 18,899.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,879.34 : 68,818.86 = 12,599.44 : x
  2. Step 2: Convert to fraction form
    45,879.34/68,818.86 = 12,599.44/x
  3. Step 3: Cross multiply
    45,879.34x = 68,818.86 × 12,599.44
  4. Step 4: Simplify right side
    45,879.34x = 867,079,097.44
  5. Step 5: Solve for x
    x = 867,079,097.44/45,879.34
  6. Step 6: Final answer
    x = 18,899.12

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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.