Home / 76,396.44-105,422.11-42,403.31

Finding the Fourth Proportional to 76,396.44, 105,422.11 and 42,403.31

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Solution

The fourth proportional to 76,396.44, 105,422.11 and 42,403.31 is: 58,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,396.44 : 105,422.11 = 42,403.31 : x
  2. Step 2: Convert to fraction form
    76,396.44/105,422.11 = 42,403.31/x
  3. Step 3: Cross multiply
    76,396.44x = 105,422.11 × 42,403.31
  4. Step 4: Simplify right side
    76,396.44x = 4,470,246,173.40
  5. Step 5: Solve for x
    x = 4,470,246,173.40/76,396.44
  6. Step 6: Final answer
    x = 58,513.80

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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.