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Finding the Fourth Proportional to 54,168.90, 74,827.44 and 49,138.80

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Solution

The fourth proportional to 54,168.90, 74,827.44 and 49,138.80 is: 67,879.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,168.90 : 74,827.44 = 49,138.80 : x
  2. Step 2: Convert to fraction form
    54,168.90/74,827.44 = 49,138.80/x
  3. Step 3: Cross multiply
    54,168.90x = 74,827.44 × 49,138.80
  4. Step 4: Simplify right side
    54,168.90x = 3,676,930,608.67
  5. Step 5: Solve for x
    x = 3,676,930,608.67/54,168.90
  6. Step 6: Final answer
    x = 67,879.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.