Home / 54,837.20-82,255.80-19,780.40

Finding the Fourth Proportional to 54,837.20, 82,255.80 and 19,780.40

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Solution

The fourth proportional to 54,837.20, 82,255.80 and 19,780.40 is: 29,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,837.20 : 82,255.80 = 19,780.40 : x
  2. Step 2: Convert to fraction form
    54,837.20/82,255.80 = 19,780.40/x
  3. Step 3: Cross multiply
    54,837.20x = 82,255.80 × 19,780.40
  4. Step 4: Simplify right side
    54,837.20x = 1,627,052,626.32
  5. Step 5: Solve for x
    x = 1,627,052,626.32/54,837.20
  6. Step 6: Final answer
    x = 29,670.60

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1.5x scale

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.