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Finding the Fourth Proportional to 107,679.51, 161,506.71 and 28,799.96

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Solution

The fourth proportional to 107,679.51, 161,506.71 and 28,799.96 is: 43,196.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,679.51 : 161,506.71 = 28,799.96 : x
  2. Step 2: Convert to fraction form
    107,679.51/161,506.71 = 28,799.96/x
  3. Step 3: Cross multiply
    107,679.51x = 161,506.71 × 28,799.96
  4. Step 4: Simplify right side
    107,679.51x = 4,651,385,980.20
  5. Step 5: Solve for x
    x = 4,651,385,980.20/107,679.51
  6. Step 6: Final answer
    x = 43,196.57

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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.