Home / 77,128.90-115,670.66-34,984.60

Finding the Fourth Proportional to 77,128.90, 115,670.66 and 34,984.60

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Solution

The fourth proportional to 77,128.90, 115,670.66 and 34,984.60 is: 52,466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.90 : 115,670.66 = 34,984.60 : x
  2. Step 2: Convert to fraction form
    77,128.90/115,670.66 = 34,984.60/x
  3. Step 3: Cross multiply
    77,128.90x = 115,670.66 × 34,984.60
  4. Step 4: Simplify right side
    77,128.90x = 4,046,691,596.91
  5. Step 5: Solve for x
    x = 4,046,691,596.91/77,128.90
  6. Step 6: Final answer
    x = 52,466.61

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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.