Home / 55,342.28-76,373.19-30,191.78

Finding the Fourth Proportional to 55,342.28, 76,373.19 and 30,191.78

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Solution

The fourth proportional to 55,342.28, 76,373.19 and 30,191.78 is: 41,665.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,342.28 : 76,373.19 = 30,191.78 : x
  2. Step 2: Convert to fraction form
    55,342.28/76,373.19 = 30,191.78/x
  3. Step 3: Cross multiply
    55,342.28x = 76,373.19 × 30,191.78
  4. Step 4: Simplify right side
    55,342.28x = 2,305,842,168.51
  5. Step 5: Solve for x
    x = 2,305,842,168.51/55,342.28
  6. Step 6: Final answer
    x = 41,665.11

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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.