Home / 77,189.24-115,785.82-21,029.80

Finding the Fourth Proportional to 77,189.24, 115,785.82 and 21,029.80

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Solution

The fourth proportional to 77,189.24, 115,785.82 and 21,029.80 is: 31,545.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,189.24 : 115,785.82 = 21,029.80 : x
  2. Step 2: Convert to fraction form
    77,189.24/115,785.82 = 21,029.80/x
  3. Step 3: Cross multiply
    77,189.24x = 115,785.82 × 21,029.80
  4. Step 4: Simplify right side
    77,189.24x = 2,434,952,637.44
  5. Step 5: Solve for x
    x = 2,434,952,637.44/77,189.24
  6. Step 6: Final answer
    x = 31,545.23

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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.