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Finding the Fourth Proportional to 71,038.44, 97,321.23 and 68,379.48

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Solution

The fourth proportional to 71,038.44, 97,321.23 and 68,379.48 is: 93,678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,038.44 : 97,321.23 = 68,379.48 : x
  2. Step 2: Convert to fraction form
    71,038.44/97,321.23 = 68,379.48/x
  3. Step 3: Cross multiply
    71,038.44x = 97,321.23 × 68,379.48
  4. Step 4: Simplify right side
    71,038.44x = 6,654,775,100.36
  5. Step 5: Solve for x
    x = 6,654,775,100.36/71,038.44
  6. Step 6: Final answer
    x = 93,678.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.