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Finding the Fourth Proportional to 71,980.69, 107,971.04 and 36,897.97

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Solution

The fourth proportional to 71,980.69, 107,971.04 and 36,897.97 is: 55,346.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,980.69 : 107,971.04 = 36,897.97 : x
  2. Step 2: Convert to fraction form
    71,980.69/107,971.04 = 36,897.97/x
  3. Step 3: Cross multiply
    71,980.69x = 107,971.04 × 36,897.97
  4. Step 4: Simplify right side
    71,980.69x = 3,983,912,194.79
  5. Step 5: Solve for x
    x = 3,983,912,194.79/71,980.69
  6. Step 6: Final answer
    x = 55,346.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.