Home / 85,345.26-117,748.32-55,148.40

Finding the Fourth Proportional to 85,345.26, 117,748.32 and 55,148.40

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Solution

The fourth proportional to 85,345.26, 117,748.32 and 55,148.40 is: 76,086.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,345.26 : 117,748.32 = 55,148.40 : x
  2. Step 2: Convert to fraction form
    85,345.26/117,748.32 = 55,148.40/x
  3. Step 3: Cross multiply
    85,345.26x = 117,748.32 × 55,148.40
  4. Step 4: Simplify right side
    85,345.26x = 6,493,631,450.69
  5. Step 5: Solve for x
    x = 6,493,631,450.69/85,345.26
  6. Step 6: Final answer
    x = 76,086.61

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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.