Home / 78,744.74-118,166.30-31,997.60

Finding the Fourth Proportional to 78,744.74, 118,166.30 and 31,997.60

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Solution

The fourth proportional to 78,744.74, 118,166.30 and 31,997.60 is: 48,016.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.74 : 118,166.30 = 31,997.60 : x
  2. Step 2: Convert to fraction form
    78,744.74/118,166.30 = 31,997.60/x
  3. Step 3: Cross multiply
    78,744.74x = 118,166.30 × 31,997.60
  4. Step 4: Simplify right side
    78,744.74x = 3,781,038,000.88
  5. Step 5: Solve for x
    x = 3,781,038,000.88/78,744.74
  6. Step 6: Final answer
    x = 48,016.39

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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.