Home / 80,636.90-111,293.46-46,640.66

Finding the Fourth Proportional to 80,636.90, 111,293.46 and 46,640.66

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Solution

The fourth proportional to 80,636.90, 111,293.46 and 46,640.66 is: 64,372.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,636.90 : 111,293.46 = 46,640.66 : x
  2. Step 2: Convert to fraction form
    80,636.90/111,293.46 = 46,640.66/x
  3. Step 3: Cross multiply
    80,636.90x = 111,293.46 × 46,640.66
  4. Step 4: Simplify right side
    80,636.90x = 5,190,799,871.62
  5. Step 5: Solve for x
    x = 5,190,799,871.62/80,636.90
  6. Step 6: Final answer
    x = 64,372.52

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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.