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Finding the Fourth Proportional to 45,344.40, 67,992.30 and 19,019.40

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Solution

The fourth proportional to 45,344.40, 67,992.30 and 19,019.40 is: 28,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,344.40 : 67,992.30 = 19,019.40 : x
  2. Step 2: Convert to fraction form
    45,344.40/67,992.30 = 19,019.40/x
  3. Step 3: Cross multiply
    45,344.40x = 67,992.30 × 19,019.40
  4. Step 4: Simplify right side
    45,344.40x = 1,293,172,750.62
  5. Step 5: Solve for x
    x = 1,293,172,750.62/45,344.40
  6. Step 6: Final answer
    x = 28,518.91

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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.