Home / 78,189.81-107,898.38-43,736.36

Finding the Fourth Proportional to 78,189.81, 107,898.38 and 43,736.36

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Solution

The fourth proportional to 78,189.81, 107,898.38 and 43,736.36 is: 60,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,189.81 : 107,898.38 = 43,736.36 : x
  2. Step 2: Convert to fraction form
    78,189.81/107,898.38 = 43,736.36/x
  3. Step 3: Cross multiply
    78,189.81x = 107,898.38 × 43,736.36
  4. Step 4: Simplify right side
    78,189.81x = 4,719,081,796.93
  5. Step 5: Solve for x
    x = 4,719,081,796.93/78,189.81
  6. Step 6: Final answer
    x = 60,354.18

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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.