Home / 54,339.19-81,515.77-19,279.15

Finding the Fourth Proportional to 54,339.19, 81,515.77 and 19,279.15

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Solution

The fourth proportional to 54,339.19, 81,515.77 and 19,279.15 is: 28,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,339.19 : 81,515.77 = 19,279.15 : x
  2. Step 2: Convert to fraction form
    54,339.19/81,515.77 = 19,279.15/x
  3. Step 3: Cross multiply
    54,339.19x = 81,515.77 × 19,279.15
  4. Step 4: Simplify right side
    54,339.19x = 1,571,554,505.21
  5. Step 5: Solve for x
    x = 1,571,554,505.21/54,339.19
  6. Step 6: Final answer
    x = 28,921.20

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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.