Home / 82,419.30-122,936.06-74,851.36

Finding the Fourth Proportional to 82,419.30, 122,936.06 and 74,851.36

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Solution

The fourth proportional to 82,419.30, 122,936.06 and 74,851.36 is: 111,647.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,419.30 : 122,936.06 = 74,851.36 : x
  2. Step 2: Convert to fraction form
    82,419.30/122,936.06 = 74,851.36/x
  3. Step 3: Cross multiply
    82,419.30x = 122,936.06 × 74,851.36
  4. Step 4: Simplify right side
    82,419.30x = 9,201,931,284.04
  5. Step 5: Solve for x
    x = 9,201,931,284.04/82,419.30
  6. Step 6: Final answer
    x = 111,647.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.