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Finding the Fourth Proportional to 67,840.80, 93,620.20 and 38,032.80

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Solution

The fourth proportional to 67,840.80, 93,620.20 and 38,032.80 is: 52,485.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,840.80 : 93,620.20 = 38,032.80 : x
  2. Step 2: Convert to fraction form
    67,840.80/93,620.20 = 38,032.80/x
  3. Step 3: Cross multiply
    67,840.80x = 93,620.20 × 38,032.80
  4. Step 4: Simplify right side
    67,840.80x = 3,560,638,342.56
  5. Step 5: Solve for x
    x = 3,560,638,342.56/67,840.80
  6. Step 6: Final answer
    x = 52,485.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.