Home / 78,683.18-118,073.97-31,936.05

Finding the Fourth Proportional to 78,683.18, 118,073.97 and 31,936.05

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Solution

The fourth proportional to 78,683.18, 118,073.97 and 31,936.05 is: 47,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,683.18 : 118,073.97 = 31,936.05 : x
  2. Step 2: Convert to fraction form
    78,683.18/118,073.97 = 31,936.05/x
  3. Step 3: Cross multiply
    78,683.18x = 118,073.97 × 31,936.05
  4. Step 4: Simplify right side
    78,683.18x = 3,770,816,209.62
  5. Step 5: Solve for x
    x = 3,770,816,209.62/78,683.18
  6. Step 6: Final answer
    x = 47,924.05

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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.