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Finding the Fourth Proportional to 70,246.72, 96,940.40 and 38,415.60

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Solution

The fourth proportional to 70,246.72, 96,940.40 and 38,415.60 is: 53,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,246.72 : 96,940.40 = 38,415.60 : x
  2. Step 2: Convert to fraction form
    70,246.72/96,940.40 = 38,415.60/x
  3. Step 3: Cross multiply
    70,246.72x = 96,940.40 × 38,415.60
  4. Step 4: Simplify right side
    70,246.72x = 3,724,023,630.24
  5. Step 5: Solve for x
    x = 3,724,023,630.24/70,246.72
  6. Step 6: Final answer
    x = 53,013.49

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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.