Home / 54,128.16-81,216.48-34,401.60

Finding the Fourth Proportional to 54,128.16, 81,216.48 and 34,401.60

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Solution

The fourth proportional to 54,128.16, 81,216.48 and 34,401.60 is: 51,617.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128.16 : 81,216.48 = 34,401.60 : x
  2. Step 2: Convert to fraction form
    54,128.16/81,216.48 = 34,401.60/x
  3. Step 3: Cross multiply
    54,128.16x = 81,216.48 × 34,401.60
  4. Step 4: Simplify right side
    54,128.16x = 2,793,976,858.37
  5. Step 5: Solve for x
    x = 2,793,976,858.37/54,128.16
  6. Step 6: Final answer
    x = 51,617.81

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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.