Home / 78,947.43-108,947.85-43,137.54

Finding the Fourth Proportional to 78,947.43, 108,947.85 and 43,137.54

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Solution

The fourth proportional to 78,947.43, 108,947.85 and 43,137.54 is: 59,530.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,947.43 : 108,947.85 = 43,137.54 : x
  2. Step 2: Convert to fraction form
    78,947.43/108,947.85 = 43,137.54/x
  3. Step 3: Cross multiply
    78,947.43x = 108,947.85 × 43,137.54
  4. Step 4: Simplify right side
    78,947.43x = 4,699,742,237.29
  5. Step 5: Solve for x
    x = 4,699,742,237.29/78,947.43
  6. Step 6: Final answer
    x = 59,530.02

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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.