Home / 78,129.11-107,810.46-43,667.48

Finding the Fourth Proportional to 78,129.11, 107,810.46 and 43,667.48

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Solution

The fourth proportional to 78,129.11, 107,810.46 and 43,667.48 is: 60,256.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,129.11 : 107,810.46 = 43,667.48 : x
  2. Step 2: Convert to fraction form
    78,129.11/107,810.46 = 43,667.48/x
  3. Step 3: Cross multiply
    78,129.11x = 107,810.46 × 43,667.48
  4. Step 4: Simplify right side
    78,129.11x = 4,707,810,566.79
  5. Step 5: Solve for x
    x = 4,707,810,566.79/78,129.11
  6. Step 6: Final answer
    x = 60,256.81

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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.