Home / 55,112.40-76,051.71-30,912.03

Finding the Fourth Proportional to 55,112.40, 76,051.71 and 30,912.03

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Solution

The fourth proportional to 55,112.40, 76,051.71 and 30,912.03 is: 42,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,112.40 : 76,051.71 = 30,912.03 : x
  2. Step 2: Convert to fraction form
    55,112.40/76,051.71 = 30,912.03/x
  3. Step 3: Cross multiply
    55,112.40x = 76,051.71 × 30,912.03
  4. Step 4: Simplify right side
    55,112.40x = 2,350,912,741.07
  5. Step 5: Solve for x
    x = 2,350,912,741.07/55,112.40
  6. Step 6: Final answer
    x = 42,656.69

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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.