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Finding the Fourth Proportional to 34,894.37, 48,154.61 and 18,978.86

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Solution

The fourth proportional to 34,894.37, 48,154.61 and 18,978.86 is: 26,191.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,894.37 : 48,154.61 = 18,978.86 : x
  2. Step 2: Convert to fraction form
    34,894.37/48,154.61 = 18,978.86/x
  3. Step 3: Cross multiply
    34,894.37x = 48,154.61 × 18,978.86
  4. Step 4: Simplify right side
    34,894.37x = 913,919,601.54
  5. Step 5: Solve for x
    x = 913,919,601.54/34,894.37
  6. Step 6: Final answer
    x = 26,191.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.