Home / 78,257.14-117,050.70-72,584.61

Finding the Fourth Proportional to 78,257.14, 117,050.70 and 72,584.61

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Solution

The fourth proportional to 78,257.14, 117,050.70 and 72,584.61 is: 108,566.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,257.14 : 117,050.70 = 72,584.61 : x
  2. Step 2: Convert to fraction form
    78,257.14/117,050.70 = 72,584.61/x
  3. Step 3: Cross multiply
    78,257.14x = 117,050.70 × 72,584.61
  4. Step 4: Simplify right side
    78,257.14x = 8,496,079,242.98
  5. Step 5: Solve for x
    x = 8,496,079,242.98/78,257.14
  6. Step 6: Final answer
    x = 108,566.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.