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Finding the Fourth Proportional to 74,640.36, 111,414.45 and 65,783.32

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Solution

The fourth proportional to 74,640.36, 111,414.45 and 65,783.32 is: 98,193.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,640.36 : 111,414.45 = 65,783.32 : x
  2. Step 2: Convert to fraction form
    74,640.36/111,414.45 = 65,783.32/x
  3. Step 3: Cross multiply
    74,640.36x = 111,414.45 × 65,783.32
  4. Step 4: Simplify right side
    74,640.36x = 7,329,212,416.97
  5. Step 5: Solve for x
    x = 7,329,212,416.97/74,640.36
  6. Step 6: Final answer
    x = 98,193.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.