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Finding the Fourth Proportional to 45,138.95, 68,018.83 and 37,414.96

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Solution

The fourth proportional to 45,138.95, 68,018.83 and 37,414.96 is: 56,379.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.95 : 68,018.83 = 37,414.96 : x
  2. Step 2: Convert to fraction form
    45,138.95/68,018.83 = 37,414.96/x
  3. Step 3: Cross multiply
    45,138.95x = 68,018.83 × 37,414.96
  4. Step 4: Simplify right side
    45,138.95x = 2,544,921,803.70
  5. Step 5: Solve for x
    x = 2,544,921,803.70/45,138.95
  6. Step 6: Final answer
    x = 56,379.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.