Home / 81,970.36-122,889.25-34,554.84

Finding the Fourth Proportional to 81,970.36, 122,889.25 and 34,554.84

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Solution

The fourth proportional to 81,970.36, 122,889.25 and 34,554.84 is: 51,804.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,970.36 : 122,889.25 = 34,554.84 : x
  2. Step 2: Convert to fraction form
    81,970.36/122,889.25 = 34,554.84/x
  3. Step 3: Cross multiply
    81,970.36x = 122,889.25 × 34,554.84
  4. Step 4: Simplify right side
    81,970.36x = 4,246,418,371.47
  5. Step 5: Solve for x
    x = 4,246,418,371.47/81,970.36
  6. Step 6: Final answer
    x = 51,804.32

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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.