Home / 85,709.63-118,279.31-47,984.69

Finding the Fourth Proportional to 85,709.63, 118,279.31 and 47,984.69

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Solution

The fourth proportional to 85,709.63, 118,279.31 and 47,984.69 is: 66,218.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,709.63 : 118,279.31 = 47,984.69 : x
  2. Step 2: Convert to fraction form
    85,709.63/118,279.31 = 47,984.69/x
  3. Step 3: Cross multiply
    85,709.63x = 118,279.31 × 47,984.69
  4. Step 4: Simplify right side
    85,709.63x = 5,675,595,192.44
  5. Step 5: Solve for x
    x = 5,675,595,192.44/85,709.63
  6. Step 6: Final answer
    x = 66,218.88

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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.