Home / 76,771.32-115,083-39,348.96

Finding the Fourth Proportional to 76,771.32, 115,083 and 39,348.96

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Solution

The fourth proportional to 76,771.32, 115,083 and 39,348.96 is: 58,985.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,771.32 : 115,083 = 39,348.96 : x
  2. Step 2: Convert to fraction form
    76,771.32/115,083 = 39,348.96/x
  3. Step 3: Cross multiply
    76,771.32x = 115,083 × 39,348.96
  4. Step 4: Simplify right side
    76,771.32x = 4,528,396,363.68
  5. Step 5: Solve for x
    x = 4,528,396,363.68/76,771.32
  6. Step 6: Final answer
    x = 58,985.52

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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.