Home / 76,625.13-105,743.21-42,635.06

Finding the Fourth Proportional to 76,625.13, 105,743.21 and 42,635.06

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Solution

The fourth proportional to 76,625.13, 105,743.21 and 42,635.06 is: 58,836.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,625.13 : 105,743.21 = 42,635.06 : x
  2. Step 2: Convert to fraction form
    76,625.13/105,743.21 = 42,635.06/x
  3. Step 3: Cross multiply
    76,625.13x = 105,743.21 × 42,635.06
  4. Step 4: Simplify right side
    76,625.13x = 4,508,367,361.05
  5. Step 5: Solve for x
    x = 4,508,367,361.05/76,625.13
  6. Step 6: Final answer
    x = 58,836.67

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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.