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Finding the Fourth Proportional to 74,668.36, 111,456.29 and 65,811.28

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Solution

The fourth proportional to 74,668.36, 111,456.29 and 65,811.28 is: 98,235.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,668.36 : 111,456.29 = 65,811.28 : x
  2. Step 2: Convert to fraction form
    74,668.36/111,456.29 = 65,811.28/x
  3. Step 3: Cross multiply
    74,668.36x = 111,456.29 × 65,811.28
  4. Step 4: Simplify right side
    74,668.36x = 7,335,081,108.95
  5. Step 5: Solve for x
    x = 7,335,081,108.95/74,668.36
  6. Step 6: Final answer
    x = 98,235.47

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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.