Home / 54,739.36-81,904-38,980.80

Finding the Fourth Proportional to 54,739.36, 81,904 and 38,980.80

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Solution

The fourth proportional to 54,739.36, 81,904 and 38,980.80 is: 58,325.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,739.36 : 81,904 = 38,980.80 : x
  2. Step 2: Convert to fraction form
    54,739.36/81,904 = 38,980.80/x
  3. Step 3: Cross multiply
    54,739.36x = 81,904 × 38,980.80
  4. Step 4: Simplify right side
    54,739.36x = 3,192,683,443.20
  5. Step 5: Solve for x
    x = 3,192,683,443.20/54,739.36
  6. Step 6: Final answer
    x = 58,325.19

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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.