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Finding the Fourth Proportional to 70,915.64, 97,863.80 and 39,083.80

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Solution

The fourth proportional to 70,915.64, 97,863.80 and 39,083.80 is: 53,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915.64 : 97,863.80 = 39,083.80 : x
  2. Step 2: Convert to fraction form
    70,915.64/97,863.80 = 39,083.80/x
  3. Step 3: Cross multiply
    70,915.64x = 97,863.80 × 39,083.80
  4. Step 4: Simplify right side
    70,915.64x = 3,824,889,186.44
  5. Step 5: Solve for x
    x = 3,824,889,186.44/70,915.64
  6. Step 6: Final answer
    x = 53,935.76

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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.