Home / 85,454.41-128,262.03-43,364.71

Finding the Fourth Proportional to 85,454.41, 128,262.03 and 43,364.71

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Solution

The fourth proportional to 85,454.41, 128,262.03 and 43,364.71 is: 65,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,454.41 : 128,262.03 = 43,364.71 : x
  2. Step 2: Convert to fraction form
    85,454.41/128,262.03 = 43,364.71/x
  3. Step 3: Cross multiply
    85,454.41x = 128,262.03 × 43,364.71
  4. Step 4: Simplify right side
    85,454.41x = 5,562,045,734.96
  5. Step 5: Solve for x
    x = 5,562,045,734.96/85,454.41
  6. Step 6: Final answer
    x = 65,087.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.