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Finding the Fourth Proportional to 71,971.95, 108,051.48 and 55,343.67

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Solution

The fourth proportional to 71,971.95, 108,051.48 and 55,343.67 is: 83,087.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971.95 : 108,051.48 = 55,343.67 : x
  2. Step 2: Convert to fraction form
    71,971.95/108,051.48 = 55,343.67/x
  3. Step 3: Cross multiply
    71,971.95x = 108,051.48 × 55,343.67
  4. Step 4: Simplify right side
    71,971.95x = 5,979,965,452.13
  5. Step 5: Solve for x
    x = 5,979,965,452.13/71,971.95
  6. Step 6: Final answer
    x = 83,087.45

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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.