Home / 72,928.97-100,664.23-42,309.80

Finding the Fourth Proportional to 72,928.97, 100,664.23 and 42,309.80

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Solution

The fourth proportional to 72,928.97, 100,664.23 and 42,309.80 is: 58,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,928.97 : 100,664.23 = 42,309.80 : x
  2. Step 2: Convert to fraction form
    72,928.97/100,664.23 = 42,309.80/x
  3. Step 3: Cross multiply
    72,928.97x = 100,664.23 × 42,309.80
  4. Step 4: Simplify right side
    72,928.97x = 4,259,083,438.45
  5. Step 5: Solve for x
    x = 4,259,083,438.45/72,928.97
  6. Step 6: Final answer
    x = 58,400.43

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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.