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Finding the Fourth Proportional to 40,492,819.20, 60,744,477.60 and 20,032,996.80

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Solution

The fourth proportional to 40,492,819.20, 60,744,477.60 and 20,032,996.80 is: 30,052,091.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,492,819.20 : 60,744,477.60 = 20,032,996.80 : x
  2. Step 2: Convert to fraction form
    40,492,819.20/60,744,477.60 = 20,032,996.80/x
  3. Step 3: Cross multiply
    40,492,819.20x = 60,744,477.60 × 20,032,996.80
  4. Step 4: Simplify right side
    40,492,819.20x = 1,216,893,925,378,471.75
  5. Step 5: Solve for x
    x = 1,216,893,925,378,471.75/40,492,819.20
  6. Step 6: Final answer
    x = 30,052,091.94

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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.