Home / 76,398.21-105,418.29-42,406.96

Finding the Fourth Proportional to 76,398.21, 105,418.29 and 42,406.96

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Solution

The fourth proportional to 76,398.21, 105,418.29 and 42,406.96 is: 58,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,398.21 : 105,418.29 = 42,406.96 : x
  2. Step 2: Convert to fraction form
    76,398.21/105,418.29 = 42,406.96/x
  3. Step 3: Cross multiply
    76,398.21x = 105,418.29 × 42,406.96
  4. Step 4: Simplify right side
    76,398.21x = 4,470,469,300.44
  5. Step 5: Solve for x
    x = 4,470,469,300.44/76,398.21
  6. Step 6: Final answer
    x = 58,515.36

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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.