Home / 76,212.42-105,115.35-66,764.58

Finding the Fourth Proportional to 76,212.42, 105,115.35 and 66,764.58

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Solution

The fourth proportional to 76,212.42, 105,115.35 and 66,764.58 is: 92,084.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,212.42 : 105,115.35 = 66,764.58 : x
  2. Step 2: Convert to fraction form
    76,212.42/105,115.35 = 66,764.58/x
  3. Step 3: Cross multiply
    76,212.42x = 105,115.35 × 66,764.58
  4. Step 4: Simplify right side
    76,212.42x = 7,017,982,194.30
  5. Step 5: Solve for x
    x = 7,017,982,194.30/76,212.42
  6. Step 6: Final answer
    x = 92,084.49

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1.5x scale

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.