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Finding the Fourth Proportional to 30,375.76, 45,547.44 and 15,578.68

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Solution

The fourth proportional to 30,375.76, 45,547.44 and 15,578.68 is: 23,359.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,375.76 : 45,547.44 = 15,578.68 : x
  2. Step 2: Convert to fraction form
    30,375.76/45,547.44 = 15,578.68/x
  3. Step 3: Cross multiply
    30,375.76x = 45,547.44 × 15,578.68
  4. Step 4: Simplify right side
    30,375.76x = 709,568,992.58
  5. Step 5: Solve for x
    x = 709,568,992.58/30,375.76
  6. Step 6: Final answer
    x = 23,359.71

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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.