Home / 86,779.46-119,817.72-67,680.57

Finding the Fourth Proportional to 86,779.46, 119,817.72 and 67,680.57

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Solution

The fourth proportional to 86,779.46, 119,817.72 and 67,680.57 is: 93,447.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,779.46 : 119,817.72 = 67,680.57 : x
  2. Step 2: Convert to fraction form
    86,779.46/119,817.72 = 67,680.57/x
  3. Step 3: Cross multiply
    86,779.46x = 119,817.72 × 67,680.57
  4. Step 4: Simplify right side
    86,779.46x = 8,109,330,986.61
  5. Step 5: Solve for x
    x = 8,109,330,986.61/86,779.46
  6. Step 6: Final answer
    x = 93,447.59

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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.