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Finding the Fourth Proportional to 79,301.65, 109,437.78 and 43,489.51

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Solution

The fourth proportional to 79,301.65, 109,437.78 and 43,489.51 is: 60,016.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,301.65 : 109,437.78 = 43,489.51 : x
  2. Step 2: Convert to fraction form
    79,301.65/109,437.78 = 43,489.51/x
  3. Step 3: Cross multiply
    79,301.65x = 109,437.78 × 43,489.51
  4. Step 4: Simplify right side
    79,301.65x = 4,759,395,427.69
  5. Step 5: Solve for x
    x = 4,759,395,427.69/79,301.65
  6. Step 6: Final answer
    x = 60,016.35

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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.