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Finding the Fourth Proportional to 78,911.44, 118,367.46 and 19,746.94

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Solution

The fourth proportional to 78,911.44, 118,367.46 and 19,746.94 is: 29,620.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,911.44 : 118,367.46 = 19,746.94 : x
  2. Step 2: Convert to fraction form
    78,911.44/118,367.46 = 19,746.94/x
  3. Step 3: Cross multiply
    78,911.44x = 118,367.46 × 19,746.94
  4. Step 4: Simplify right side
    78,911.44x = 2,337,395,130.57
  5. Step 5: Solve for x
    x = 2,337,395,130.57/78,911.44
  6. Step 6: Final answer
    x = 29,620.49

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1.5x scale

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.