Home / 54,319.36-81,488.64-19,279.36

Finding the Fourth Proportional to 54,319.36, 81,488.64 and 19,279.36

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Solution

The fourth proportional to 54,319.36, 81,488.64 and 19,279.36 is: 28,922.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,319.36 : 81,488.64 = 19,279.36 : x
  2. Step 2: Convert to fraction form
    54,319.36/81,488.64 = 19,279.36/x
  3. Step 3: Cross multiply
    54,319.36x = 81,488.64 × 19,279.36
  4. Step 4: Simplify right side
    54,319.36x = 1,571,048,826.47
  5. Step 5: Solve for x
    x = 1,571,048,826.47/54,319.36
  6. Step 6: Final answer
    x = 28,922.45

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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.