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Finding the Fourth Proportional to 79,308.46, 118,970.22 and 28,720.26

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Solution

The fourth proportional to 79,308.46, 118,970.22 and 28,720.26 is: 43,083.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,308.46 : 118,970.22 = 28,720.26 : x
  2. Step 2: Convert to fraction form
    79,308.46/118,970.22 = 28,720.26/x
  3. Step 3: Cross multiply
    79,308.46x = 118,970.22 × 28,720.26
  4. Step 4: Simplify right side
    79,308.46x = 3,416,855,989.09
  5. Step 5: Solve for x
    x = 3,416,855,989.09/79,308.46
  6. Step 6: Final answer
    x = 43,083.12

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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.