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Finding the Fourth Proportional to 79,208.82, 109,308.15 and 43,400.19

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Solution

The fourth proportional to 79,208.82, 109,308.15 and 43,400.19 is: 59,892.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,208.82 : 109,308.15 = 43,400.19 : x
  2. Step 2: Convert to fraction form
    79,208.82/109,308.15 = 43,400.19/x
  3. Step 3: Cross multiply
    79,208.82x = 109,308.15 × 43,400.19
  4. Step 4: Simplify right side
    79,208.82x = 4,743,994,478.55
  5. Step 5: Solve for x
    x = 4,743,994,478.55/79,208.82
  6. Step 6: Final answer
    x = 59,892.25

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1.5x scale

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.