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Finding the Fourth Proportional to 48,442.40, 72,620.40 and 18,850.40

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Solution

The fourth proportional to 48,442.40, 72,620.40 and 18,850.40 is: 28,258.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,442.40 : 72,620.40 = 18,850.40 : x
  2. Step 2: Convert to fraction form
    48,442.40/72,620.40 = 18,850.40/x
  3. Step 3: Cross multiply
    48,442.40x = 72,620.40 × 18,850.40
  4. Step 4: Simplify right side
    48,442.40x = 1,368,923,588.16
  5. Step 5: Solve for x
    x = 1,368,923,588.16/48,442.40
  6. Step 6: Final answer
    x = 28,258.79

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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.