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Finding the Fourth Proportional to 70,951.74, 106,396.77 and 20,339.62

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Solution

The fourth proportional to 70,951.74, 106,396.77 and 20,339.62 is: 30,500.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.74 : 106,396.77 = 20,339.62 : x
  2. Step 2: Convert to fraction form
    70,951.74/106,396.77 = 20,339.62/x
  3. Step 3: Cross multiply
    70,951.74x = 106,396.77 × 20,339.62
  4. Step 4: Simplify right side
    70,951.74x = 2,164,069,871.03
  5. Step 5: Solve for x
    x = 2,164,069,871.03/70,951.74
  6. Step 6: Final answer
    x = 30,500.59

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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.