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Finding the Fourth Proportional to 30,245.78, 45,377.90 and 15,465.08

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Solution

The fourth proportional to 30,245.78, 45,377.90 and 15,465.08 is: 23,202.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,245.78 : 45,377.90 = 15,465.08 : x
  2. Step 2: Convert to fraction form
    30,245.78/45,377.90 = 15,465.08/x
  3. Step 3: Cross multiply
    30,245.78x = 45,377.90 × 15,465.08
  4. Step 4: Simplify right side
    30,245.78x = 701,772,853.73
  5. Step 5: Solve for x
    x = 701,772,853.73/30,245.78
  6. Step 6: Final answer
    x = 23,202.34

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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.