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Finding the Fourth Proportional to 70,969.84, 97,933.84 and 39,138.96

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Solution

The fourth proportional to 70,969.84, 97,933.84 and 39,138.96 is: 54,009.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,969.84 : 97,933.84 = 39,138.96 : x
  2. Step 2: Convert to fraction form
    70,969.84/97,933.84 = 39,138.96/x
  3. Step 3: Cross multiply
    70,969.84x = 97,933.84 × 39,138.96
  4. Step 4: Simplify right side
    70,969.84x = 3,833,028,646.41
  5. Step 5: Solve for x
    x = 3,833,028,646.41/70,969.84
  6. Step 6: Final answer
    x = 54,009.26

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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.