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Finding the Fourth Proportional to 70,903.88, 97,847.67 and 39,072.09

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Solution

The fourth proportional to 70,903.88, 97,847.67 and 39,072.09 is: 53,919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.88 : 97,847.67 = 39,072.09 : x
  2. Step 2: Convert to fraction form
    70,903.88/97,847.67 = 39,072.09/x
  3. Step 3: Cross multiply
    70,903.88x = 97,847.67 × 39,072.09
  4. Step 4: Simplify right side
    70,903.88x = 3,823,112,968.53
  5. Step 5: Solve for x
    x = 3,823,112,968.53/70,903.88
  6. Step 6: Final answer
    x = 53,919.66

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Why These Related Problems?

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