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Finding the Fourth Proportional to 54,972.20, 77,116.60 and 54,972.20

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Solution

The fourth proportional to 54,972.20, 77,116.60 and 54,972.20 is: 77,116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,972.20 : 77,116.60 = 54,972.20 : x
  2. Step 2: Convert to fraction form
    54,972.20/77,116.60 = 54,972.20/x
  3. Step 3: Cross multiply
    54,972.20x = 77,116.60 × 54,972.20
  4. Step 4: Simplify right side
    54,972.20x = 4,239,269,158.52
  5. Step 5: Solve for x
    x = 4,239,269,158.52/54,972.20
  6. Step 6: Final answer
    x = 77,116.60

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.