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Finding the Fourth Proportional to 45,339, 68,018.22 and 19,065.84

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Solution

The fourth proportional to 45,339, 68,018.22 and 19,065.84 is: 28,602.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,339 : 68,018.22 = 19,065.84 : x
  2. Step 2: Convert to fraction form
    45,339/68,018.22 = 19,065.84/x
  3. Step 3: Cross multiply
    45,339x = 68,018.22 × 19,065.84
  4. Step 4: Simplify right side
    45,339x = 1,296,824,499.60
  5. Step 5: Solve for x
    x = 1,296,824,499.60/45,339
  6. Step 6: Final answer
    x = 28,602.85

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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.