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Finding the Fourth Proportional to 84,465.99, 126,843.93 and 74,999.70

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Solution

The fourth proportional to 84,465.99, 126,843.93 and 74,999.70 is: 112,628.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,465.99 : 126,843.93 = 74,999.70 : x
  2. Step 2: Convert to fraction form
    84,465.99/126,843.93 = 74,999.70/x
  3. Step 3: Cross multiply
    84,465.99x = 126,843.93 × 74,999.70
  4. Step 4: Simplify right side
    84,465.99x = 9,513,256,696.82
  5. Step 5: Solve for x
    x = 9,513,256,696.82/84,465.99
  6. Step 6: Final answer
    x = 112,628.25

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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.