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Finding the Fourth Proportional to 67,928.80, 101,828.40 and 60,930.40

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Solution

The fourth proportional to 67,928.80, 101,828.40 and 60,930.40 is: 91,337.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,928.80 : 101,828.40 = 60,930.40 : x
  2. Step 2: Convert to fraction form
    67,928.80/101,828.40 = 60,930.40/x
  3. Step 3: Cross multiply
    67,928.80x = 101,828.40 × 60,930.40
  4. Step 4: Simplify right side
    67,928.80x = 6,204,445,143.36
  5. Step 5: Solve for x
    x = 6,204,445,143.36/67,928.80
  6. Step 6: Final answer
    x = 91,337.48

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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.