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Finding the Fourth Proportional to 55,357.53, 76,399.53 and 31,159.23

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Solution

The fourth proportional to 55,357.53, 76,399.53 and 31,159.23 is: 43,003.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,357.53 : 76,399.53 = 31,159.23 : x
  2. Step 2: Convert to fraction form
    55,357.53/76,399.53 = 31,159.23/x
  3. Step 3: Cross multiply
    55,357.53x = 76,399.53 × 31,159.23
  4. Step 4: Simplify right side
    55,357.53x = 2,380,550,527.16
  5. Step 5: Solve for x
    x = 2,380,550,527.16/55,357.53
  6. Step 6: Final answer
    x = 43,003.19

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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.