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Finding the Fourth Proportional to 30,258.35, 45,340.08 and 19,141.55

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Solution

The fourth proportional to 30,258.35, 45,340.08 and 19,141.55 is: 28,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,258.35 : 45,340.08 = 19,141.55 : x
  2. Step 2: Convert to fraction form
    30,258.35/45,340.08 = 19,141.55/x
  3. Step 3: Cross multiply
    30,258.35x = 45,340.08 × 19,141.55
  4. Step 4: Simplify right side
    30,258.35x = 867,879,181.62
  5. Step 5: Solve for x
    x = 867,879,181.62/30,258.35
  6. Step 6: Final answer
    x = 28,682.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.