Home / 68,879.16-103,315.02-22,128.36

Finding the Fourth Proportional to 68,879.16, 103,315.02 and 22,128.36

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Solution

The fourth proportional to 68,879.16, 103,315.02 and 22,128.36 is: 33,191.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,879.16 : 103,315.02 = 22,128.36 : x
  2. Step 2: Convert to fraction form
    68,879.16/103,315.02 = 22,128.36/x
  3. Step 3: Cross multiply
    68,879.16x = 103,315.02 × 22,128.36
  4. Step 4: Simplify right side
    68,879.16x = 2,286,191,955.97
  5. Step 5: Solve for x
    x = 2,286,191,955.97/68,879.16
  6. Step 6: Final answer
    x = 33,191.34

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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.