Home / 78,741.10-118,112.09-19,576.77

Finding the Fourth Proportional to 78,741.10, 118,112.09 and 19,576.77

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Solution

The fourth proportional to 78,741.10, 118,112.09 and 19,576.77 is: 29,365.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,741.10 : 118,112.09 = 19,576.77 : x
  2. Step 2: Convert to fraction form
    78,741.10/118,112.09 = 19,576.77/x
  3. Step 3: Cross multiply
    78,741.10x = 118,112.09 × 19,576.77
  4. Step 4: Simplify right side
    78,741.10x = 2,312,253,453.84
  5. Step 5: Solve for x
    x = 2,312,253,453.84/78,741.10
  6. Step 6: Final answer
    x = 29,365.27

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1.5x scale

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.