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Finding the Fourth Proportional to 54,989,266.80, 82,483,900.20 and 54,138,961.20

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Solution

The fourth proportional to 54,989,266.80, 82,483,900.20 and 54,138,961.20 is: 81,208,441.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,989,266.80 : 82,483,900.20 = 54,138,961.20 : x
  2. Step 2: Convert to fraction form
    54,989,266.80/82,483,900.20 = 54,138,961.20/x
  3. Step 3: Cross multiply
    54,989,266.80x = 82,483,900.20 × 54,138,961.20
  4. Step 4: Simplify right side
    54,989,266.80x = 4,465,592,672,552,472.50
  5. Step 5: Solve for x
    x = 4,465,592,672,552,472.50/54,989,266.80
  6. Step 6: Final answer
    x = 81,208,441.80

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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.