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Finding the Fourth Proportional to 28,489,529.80, 42,734,294.70 and 8,295,430.60

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Solution

The fourth proportional to 28,489,529.80, 42,734,294.70 and 8,295,430.60 is: 12,443,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489,529.80 : 42,734,294.70 = 8,295,430.60 : x
  2. Step 2: Convert to fraction form
    28,489,529.80/42,734,294.70 = 8,295,430.60/x
  3. Step 3: Cross multiply
    28,489,529.80x = 42,734,294.70 × 8,295,430.60
  4. Step 4: Simplify right side
    28,489,529.80x = 354,499,375,923,797.81
  5. Step 5: Solve for x
    x = 354,499,375,923,797.81/28,489,529.80
  6. Step 6: Final answer
    x = 12,443,145.90

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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.