Home / 78,683.30-118,074.16-31,936.18

Finding the Fourth Proportional to 78,683.30, 118,074.16 and 31,936.18

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Solution

The fourth proportional to 78,683.30, 118,074.16 and 31,936.18 is: 47,924.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,683.30 : 118,074.16 = 31,936.18 : x
  2. Step 2: Convert to fraction form
    78,683.30/118,074.16 = 31,936.18/x
  3. Step 3: Cross multiply
    78,683.30x = 118,074.16 × 31,936.18
  4. Step 4: Simplify right side
    78,683.30x = 3,770,837,036.74
  5. Step 5: Solve for x
    x = 3,770,837,036.74/78,683.30
  6. Step 6: Final answer
    x = 47,924.24

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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.