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Finding the Fourth Proportional to 68,022.68, 101,930.18 and 28,558.40

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Solution

The fourth proportional to 68,022.68, 101,930.18 and 28,558.40 is: 42,794.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,022.68 : 101,930.18 = 28,558.40 : x
  2. Step 2: Convert to fraction form
    68,022.68/101,930.18 = 28,558.40/x
  3. Step 3: Cross multiply
    68,022.68x = 101,930.18 × 28,558.40
  4. Step 4: Simplify right side
    68,022.68x = 2,910,962,852.51
  5. Step 5: Solve for x
    x = 2,910,962,852.51/68,022.68
  6. Step 6: Final answer
    x = 42,794.00

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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.