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Finding the Fourth Proportional to 94,738.70, 142,108.05 and 28,179.78

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Solution

The fourth proportional to 94,738.70, 142,108.05 and 28,179.78 is: 42,269.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,738.70 : 142,108.05 = 28,179.78 : x
  2. Step 2: Convert to fraction form
    94,738.70/142,108.05 = 28,179.78/x
  3. Step 3: Cross multiply
    94,738.70x = 142,108.05 × 28,179.78
  4. Step 4: Simplify right side
    94,738.70x = 4,004,573,585.23
  5. Step 5: Solve for x
    x = 4,004,573,585.23/94,738.70
  6. Step 6: Final answer
    x = 42,269.67

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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.