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Finding the Fourth Proportional to 54,229,541.70, 81,424,028.70 and 38,126,879.40

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Solution

The fourth proportional to 54,229,541.70, 81,424,028.70 and 38,126,879.40 is: 57,246,364.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,229,541.70 : 81,424,028.70 = 38,126,879.40 : x
  2. Step 2: Convert to fraction form
    54,229,541.70/81,424,028.70 = 38,126,879.40/x
  3. Step 3: Cross multiply
    54,229,541.70x = 81,424,028.70 × 38,126,879.40
  4. Step 4: Simplify right side
    54,229,541.70x = 3,104,444,122,507,039
  5. Step 5: Solve for x
    x = 3,104,444,122,507,039/54,229,541.70
  6. Step 6: Final answer
    x = 57,246,364.72

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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.