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Finding the Fourth Proportional to 45,340, 68,019.72 and 19,066.84

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Solution

The fourth proportional to 45,340, 68,019.72 and 19,066.84 is: 28,604.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,340 : 68,019.72 = 19,066.84 : x
  2. Step 2: Convert to fraction form
    45,340/68,019.72 = 19,066.84/x
  3. Step 3: Cross multiply
    45,340x = 68,019.72 × 19,066.84
  4. Step 4: Simplify right side
    45,340x = 1,296,921,118.08
  5. Step 5: Solve for x
    x = 1,296,921,118.08/45,340
  6. Step 6: Final answer
    x = 28,604.35

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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.