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Finding the Fourth Proportional to 68,799.68, 103,141.92 and 65,533.76

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Solution

The fourth proportional to 68,799.68, 103,141.92 and 65,533.76 is: 98,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,799.68 : 103,141.92 = 65,533.76 : x
  2. Step 2: Convert to fraction form
    68,799.68/103,141.92 = 65,533.76/x
  3. Step 3: Cross multiply
    68,799.68x = 103,141.92 × 65,533.76
  4. Step 4: Simplify right side
    68,799.68x = 6,759,277,831.22
  5. Step 5: Solve for x
    x = 6,759,277,831.22/68,799.68
  6. Step 6: Final answer
    x = 98,245.77

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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.