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Finding the Fourth Proportional to 101,291.26, 139,774.77 and 55,968.76

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Solution

The fourth proportional to 101,291.26, 139,774.77 and 55,968.76 is: 77,232.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,291.26 : 139,774.77 = 55,968.76 : x
  2. Step 2: Convert to fraction form
    101,291.26/139,774.77 = 55,968.76/x
  3. Step 3: Cross multiply
    101,291.26x = 139,774.77 × 55,968.76
  4. Step 4: Simplify right side
    101,291.26x = 7,823,020,556.19
  5. Step 5: Solve for x
    x = 7,823,020,556.19/101,291.26
  6. Step 6: Final answer
    x = 77,232.93

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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.