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Finding the Fourth Proportional to 54,318,830.20, 81,478,245.30 and 54,318,830.20

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Solution

The fourth proportional to 54,318,830.20, 81,478,245.30 and 54,318,830.20 is: 81,478,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,318,830.20 : 81,478,245.30 = 54,318,830.20 : x
  2. Step 2: Convert to fraction form
    54,318,830.20/81,478,245.30 = 54,318,830.20/x
  3. Step 3: Cross multiply
    54,318,830.20x = 81,478,245.30 × 54,318,830.20
  4. Step 4: Simplify right side
    54,318,830.20x = 4,425,802,971,444,648
  5. Step 5: Solve for x
    x = 4,425,802,971,444,648/54,318,830.20
  6. Step 6: Final answer
    x = 81,478,245.30

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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.