Home / 72,982.19-100,716.54-42,760.28

Finding the Fourth Proportional to 72,982.19, 100,716.54 and 42,760.28

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Solution

The fourth proportional to 72,982.19, 100,716.54 and 42,760.28 is: 59,009.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,982.19 : 100,716.54 = 42,760.28 : x
  2. Step 2: Convert to fraction form
    72,982.19/100,716.54 = 42,760.28/x
  3. Step 3: Cross multiply
    72,982.19x = 100,716.54 × 42,760.28
  4. Step 4: Simplify right side
    72,982.19x = 4,306,667,451.03
  5. Step 5: Solve for x
    x = 4,306,667,451.03/72,982.19
  6. Step 6: Final answer
    x = 59,009.84

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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.