Home / 68,713.95-103,085.64-21,328.05

Finding the Fourth Proportional to 68,713.95, 103,085.64 and 21,328.05

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Solution

The fourth proportional to 68,713.95, 103,085.64 and 21,328.05 is: 31,996.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.95 : 103,085.64 = 21,328.05 : x
  2. Step 2: Convert to fraction form
    68,713.95/103,085.64 = 21,328.05/x
  3. Step 3: Cross multiply
    68,713.95x = 103,085.64 × 21,328.05
  4. Step 4: Simplify right side
    68,713.95x = 2,198,615,684.20
  5. Step 5: Solve for x
    x = 2,198,615,684.20/68,713.95
  6. Step 6: Final answer
    x = 31,996.64

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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.