Home / 78,971.34-108,977.49-43,161.06

Finding the Fourth Proportional to 78,971.34, 108,977.49 and 43,161.06

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Solution

The fourth proportional to 78,971.34, 108,977.49 and 43,161.06 is: 59,560.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,971.34 : 108,977.49 = 43,161.06 : x
  2. Step 2: Convert to fraction form
    78,971.34/108,977.49 = 43,161.06/x
  3. Step 3: Cross multiply
    78,971.34x = 108,977.49 × 43,161.06
  4. Step 4: Simplify right side
    78,971.34x = 4,703,583,984.54
  5. Step 5: Solve for x
    x = 4,703,583,984.54/78,971.34
  6. Step 6: Final answer
    x = 59,560.65

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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.