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Finding the Fourth Proportional to 70,955.72, 97,918.26 and 39,124.88

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Solution

The fourth proportional to 70,955.72, 97,918.26 and 39,124.88 is: 53,991.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,955.72 : 97,918.26 = 39,124.88 : x
  2. Step 2: Convert to fraction form
    70,955.72/97,918.26 = 39,124.88/x
  3. Step 3: Cross multiply
    70,955.72x = 97,918.26 × 39,124.88
  4. Step 4: Simplify right side
    70,955.72x = 3,831,040,172.31
  5. Step 5: Solve for x
    x = 3,831,040,172.31/70,955.72
  6. Step 6: Final answer
    x = 53,991.99

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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.