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Finding the Fourth Proportional to 86,979.63, 130,477.59 and 27,801.21

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Solution

The fourth proportional to 86,979.63, 130,477.59 and 27,801.21 is: 41,704.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,979.63 : 130,477.59 = 27,801.21 : x
  2. Step 2: Convert to fraction form
    86,979.63/130,477.59 = 27,801.21/x
  3. Step 3: Cross multiply
    86,979.63x = 130,477.59 × 27,801.21
  4. Step 4: Simplify right side
    86,979.63x = 3,627,434,879.88
  5. Step 5: Solve for x
    x = 3,627,434,879.88/86,979.63
  6. Step 6: Final answer
    x = 41,704.42

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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.