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Finding the Fourth Proportional to 91,606, 126,416.28 and 51,862

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Solution

The fourth proportional to 91,606, 126,416.28 and 51,862 is: 71,569.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,606 : 126,416.28 = 51,862 : x
  2. Step 2: Convert to fraction form
    91,606/126,416.28 = 51,862/x
  3. Step 3: Cross multiply
    91,606x = 126,416.28 × 51,862
  4. Step 4: Simplify right side
    91,606x = 6,556,201,113.36
  5. Step 5: Solve for x
    x = 6,556,201,113.36/91,606
  6. Step 6: Final answer
    x = 71,569.56

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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.