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Finding the Fourth Proportional to 71,706.33, 98,957.15 and 39,442.32

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Solution

The fourth proportional to 71,706.33, 98,957.15 and 39,442.32 is: 54,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,706.33 : 98,957.15 = 39,442.32 : x
  2. Step 2: Convert to fraction form
    71,706.33/98,957.15 = 39,442.32/x
  3. Step 3: Cross multiply
    71,706.33x = 98,957.15 × 39,442.32
  4. Step 4: Simplify right side
    71,706.33x = 3,903,099,576.59
  5. Step 5: Solve for x
    x = 3,903,099,576.59/71,706.33
  6. Step 6: Final answer
    x = 54,431.73

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1.5x scale

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.