Home / 81,389.61-122,067.95-22,220.33

Finding the Fourth Proportional to 81,389.61, 122,067.95 and 22,220.33

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Solution

The fourth proportional to 81,389.61, 122,067.95 and 22,220.33 is: 33,325.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,389.61 : 122,067.95 = 22,220.33 : x
  2. Step 2: Convert to fraction form
    81,389.61/122,067.95 = 22,220.33/x
  3. Step 3: Cross multiply
    81,389.61x = 122,067.95 × 22,220.33
  4. Step 4: Simplify right side
    81,389.61x = 2,712,389,409.98
  5. Step 5: Solve for x
    x = 2,712,389,409.98/81,389.61
  6. Step 6: Final answer
    x = 33,325.99

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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.