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Finding the Fourth Proportional to 54,798.44, 81,981.38 and 42,223.19

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Solution

The fourth proportional to 54,798.44, 81,981.38 and 42,223.19 is: 63,168.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,798.44 : 81,981.38 = 42,223.19 : x
  2. Step 2: Convert to fraction form
    54,798.44/81,981.38 = 42,223.19/x
  3. Step 3: Cross multiply
    54,798.44x = 81,981.38 × 42,223.19
  4. Step 4: Simplify right side
    54,798.44x = 3,461,515,079.85
  5. Step 5: Solve for x
    x = 3,461,515,079.85/54,798.44
  6. Step 6: Final answer
    x = 63,168.14

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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.