Home / 54,258.40-81,379.80-20,994.16

Finding the Fourth Proportional to 54,258.40, 81,379.80 and 20,994.16

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Solution

The fourth proportional to 54,258.40, 81,379.80 and 20,994.16 is: 31,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,258.40 : 81,379.80 = 20,994.16 : x
  2. Step 2: Convert to fraction form
    54,258.40/81,379.80 = 20,994.16/x
  3. Step 3: Cross multiply
    54,258.40x = 81,379.80 × 20,994.16
  4. Step 4: Simplify right side
    54,258.40x = 1,708,500,541.97
  5. Step 5: Solve for x
    x = 1,708,500,541.97/54,258.40
  6. Step 6: Final answer
    x = 31,488.22

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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.