Home / 82,839.13-124,258.69-20,509.63

Finding the Fourth Proportional to 82,839.13, 124,258.69 and 20,509.63

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Solution

The fourth proportional to 82,839.13, 124,258.69 and 20,509.63 is: 30,764.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,839.13 : 124,258.69 = 20,509.63 : x
  2. Step 2: Convert to fraction form
    82,839.13/124,258.69 = 20,509.63/x
  3. Step 3: Cross multiply
    82,839.13x = 124,258.69 × 20,509.63
  4. Step 4: Simplify right side
    82,839.13x = 2,548,499,134.89
  5. Step 5: Solve for x
    x = 2,548,499,134.89/82,839.13
  6. Step 6: Final answer
    x = 30,764.44

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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.