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Finding the Fourth Proportional to 70,763.34, 106,108.43 and 20,836.97

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Solution

The fourth proportional to 70,763.34, 106,108.43 and 20,836.97 is: 31,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,763.34 : 106,108.43 = 20,836.97 : x
  2. Step 2: Convert to fraction form
    70,763.34/106,108.43 = 20,836.97/x
  3. Step 3: Cross multiply
    70,763.34x = 106,108.43 × 20,836.97
  4. Step 4: Simplify right side
    70,763.34x = 2,210,977,537.93
  5. Step 5: Solve for x
    x = 2,210,977,537.93/70,763.34
  6. Step 6: Final answer
    x = 31,244.67

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1.5x scale

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.