Home / 78,947.36-109,020.09-50,702.25

Finding the Fourth Proportional to 78,947.36, 109,020.09 and 50,702.25

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Solution

The fourth proportional to 78,947.36, 109,020.09 and 50,702.25 is: 70,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,947.36 : 109,020.09 = 50,702.25 : x
  2. Step 2: Convert to fraction form
    78,947.36/109,020.09 = 50,702.25/x
  3. Step 3: Cross multiply
    78,947.36x = 109,020.09 × 50,702.25
  4. Step 4: Simplify right side
    78,947.36x = 5,527,563,858.20
  5. Step 5: Solve for x
    x = 5,527,563,858.20/78,947.36
  6. Step 6: Final answer
    x = 70,015.82

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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.