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Finding the Fourth Proportional to 47,960.98, 71,941.35 and 12,900.67

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Solution

The fourth proportional to 47,960.98, 71,941.35 and 12,900.67 is: 19,350.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,960.98 : 71,941.35 = 12,900.67 : x
  2. Step 2: Convert to fraction form
    47,960.98/71,941.35 = 12,900.67/x
  3. Step 3: Cross multiply
    47,960.98x = 71,941.35 × 12,900.67
  4. Step 4: Simplify right side
    47,960.98x = 928,091,256.00
  5. Step 5: Solve for x
    x = 928,091,256.00/47,960.98
  6. Step 6: Final answer
    x = 19,350.97

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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.