Home / 68,216.23-102,328.14-20,838.52

Finding the Fourth Proportional to 68,216.23, 102,328.14 and 20,838.52

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Solution

The fourth proportional to 68,216.23, 102,328.14 and 20,838.52 is: 31,258.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,216.23 : 102,328.14 = 20,838.52 : x
  2. Step 2: Convert to fraction form
    68,216.23/102,328.14 = 20,838.52/x
  3. Step 3: Cross multiply
    68,216.23x = 102,328.14 × 20,838.52
  4. Step 4: Simplify right side
    68,216.23x = 2,132,366,991.95
  5. Step 5: Solve for x
    x = 2,132,366,991.95/68,216.23
  6. Step 6: Final answer
    x = 31,258.94

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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.