Home / 91,825.25-126,728.55-51,539.29

Finding the Fourth Proportional to 91,825.25, 126,728.55 and 51,539.29

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Solution

The fourth proportional to 91,825.25, 126,728.55 and 51,539.29 is: 71,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,825.25 : 126,728.55 = 51,539.29 : x
  2. Step 2: Convert to fraction form
    91,825.25/126,728.55 = 51,539.29/x
  3. Step 3: Cross multiply
    91,825.25x = 126,728.55 × 51,539.29
  4. Step 4: Simplify right side
    91,825.25x = 6,531,499,172.91
  5. Step 5: Solve for x
    x = 6,531,499,172.91/91,825.25
  6. Step 6: Final answer
    x = 71,129.67

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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.