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Finding the Fourth Proportional to 79,507.25, 109,654.28 and 53,971.64

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Solution

The fourth proportional to 79,507.25, 109,654.28 and 53,971.64 is: 74,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,507.25 : 109,654.28 = 53,971.64 : x
  2. Step 2: Convert to fraction form
    79,507.25/109,654.28 = 53,971.64/x
  3. Step 3: Cross multiply
    79,507.25x = 109,654.28 × 53,971.64
  4. Step 4: Simplify right side
    79,507.25x = 5,918,221,324.62
  5. Step 5: Solve for x
    x = 5,918,221,324.62/79,507.25
  6. Step 6: Final answer
    x = 74,436.25

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1.5x scale

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.