Home / 98,074.38-135,345.26-55,639.28

Finding the Fourth Proportional to 98,074.38, 135,345.26 and 55,639.28

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Solution

The fourth proportional to 98,074.38, 135,345.26 and 55,639.28 is: 76,783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,074.38 : 135,345.26 = 55,639.28 : x
  2. Step 2: Convert to fraction form
    98,074.38/135,345.26 = 55,639.28/x
  3. Step 3: Cross multiply
    98,074.38x = 135,345.26 × 55,639.28
  4. Step 4: Simplify right side
    98,074.38x = 7,530,512,817.81
  5. Step 5: Solve for x
    x = 7,530,512,817.81/98,074.38
  6. Step 6: Final answer
    x = 76,783.69

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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.