Home / 78,833.81-118,180.38-28,902.24

Finding the Fourth Proportional to 78,833.81, 118,180.38 and 28,902.24

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Solution

The fourth proportional to 78,833.81, 118,180.38 and 28,902.24 is: 43,327.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,833.81 : 118,180.38 = 28,902.24 : x
  2. Step 2: Convert to fraction form
    78,833.81/118,180.38 = 28,902.24/x
  3. Step 3: Cross multiply
    78,833.81x = 118,180.38 × 28,902.24
  4. Step 4: Simplify right side
    78,833.81x = 3,415,677,706.05
  5. Step 5: Solve for x
    x = 3,415,677,706.05/78,833.81
  6. Step 6: Final answer
    x = 43,327.57

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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.