Home / 78,829.50-108,787.01-43,021.80

Finding the Fourth Proportional to 78,829.50, 108,787.01 and 43,021.80

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Solution

The fourth proportional to 78,829.50, 108,787.01 and 43,021.80 is: 59,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.50 : 108,787.01 = 43,021.80 : x
  2. Step 2: Convert to fraction form
    78,829.50/108,787.01 = 43,021.80/x
  3. Step 3: Cross multiply
    78,829.50x = 108,787.01 × 43,021.80
  4. Step 4: Simplify right side
    78,829.50x = 4,680,212,771.71
  5. Step 5: Solve for x
    x = 4,680,212,771.71/78,829.50
  6. Step 6: Final answer
    x = 59,371.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.