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Finding the Fourth Proportional to 36,979.20, 51,027.84 and 21,067.20

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Solution

The fourth proportional to 36,979.20, 51,027.84 and 21,067.20 is: 29,070.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,979.20 : 51,027.84 = 21,067.20 : x
  2. Step 2: Convert to fraction form
    36,979.20/51,027.84 = 21,067.20/x
  3. Step 3: Cross multiply
    36,979.20x = 51,027.84 × 21,067.20
  4. Step 4: Simplify right side
    36,979.20x = 1,075,013,710.85
  5. Step 5: Solve for x
    x = 1,075,013,710.85/36,979.20
  6. Step 6: Final answer
    x = 29,070.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.