Home / 78,715.22-118,090.37-28,794.21

Finding the Fourth Proportional to 78,715.22, 118,090.37 and 28,794.21

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Solution

The fourth proportional to 78,715.22, 118,090.37 and 28,794.21 is: 43,197.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,715.22 : 118,090.37 = 28,794.21 : x
  2. Step 2: Convert to fraction form
    78,715.22/118,090.37 = 28,794.21/x
  3. Step 3: Cross multiply
    78,715.22x = 118,090.37 × 28,794.21
  4. Step 4: Simplify right side
    78,715.22x = 3,400,318,876.76
  5. Step 5: Solve for x
    x = 3,400,318,876.76/78,715.22
  6. Step 6: Final answer
    x = 43,197.73

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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.