Home / 76,640.96-105,770.04-42,652.28

Finding the Fourth Proportional to 76,640.96, 105,770.04 and 42,652.28

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Solution

The fourth proportional to 76,640.96, 105,770.04 and 42,652.28 is: 58,863.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,640.96 : 105,770.04 = 42,652.28 : x
  2. Step 2: Convert to fraction form
    76,640.96/105,770.04 = 42,652.28/x
  3. Step 3: Cross multiply
    76,640.96x = 105,770.04 × 42,652.28
  4. Step 4: Simplify right side
    76,640.96x = 4,511,333,361.69
  5. Step 5: Solve for x
    x = 4,511,333,361.69/76,640.96
  6. Step 6: Final answer
    x = 58,863.22

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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.