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Finding the Fourth Proportional to 84,917.68, 117,187.50 and 49,109.20

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Solution

The fourth proportional to 84,917.68, 117,187.50 and 49,109.20 is: 67,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,917.68 : 117,187.50 = 49,109.20 : x
  2. Step 2: Convert to fraction form
    84,917.68/117,187.50 = 49,109.20/x
  3. Step 3: Cross multiply
    84,917.68x = 117,187.50 × 49,109.20
  4. Step 4: Simplify right side
    84,917.68x = 5,754,984,375
  5. Step 5: Solve for x
    x = 5,754,984,375/84,917.68
  6. Step 6: Final answer
    x = 67,771.33

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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.