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Finding the Fourth Proportional to 47,213.55, 70,804.01 and 20,936.67

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Solution

The fourth proportional to 47,213.55, 70,804.01 and 20,936.67 is: 31,397.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,213.55 : 70,804.01 = 20,936.67 : x
  2. Step 2: Convert to fraction form
    47,213.55/70,804.01 = 20,936.67/x
  3. Step 3: Cross multiply
    47,213.55x = 70,804.01 × 20,936.67
  4. Step 4: Simplify right side
    47,213.55x = 1,482,400,087.36
  5. Step 5: Solve for x
    x = 1,482,400,087.36/47,213.55
  6. Step 6: Final answer
    x = 31,397.77

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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.