Home / 51,436.09-70,989.36-31,289.06

Finding the Fourth Proportional to 51,436.09, 70,989.36 and 31,289.06

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Solution

The fourth proportional to 51,436.09, 70,989.36 and 31,289.06 is: 43,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,436.09 : 70,989.36 = 31,289.06 : x
  2. Step 2: Convert to fraction form
    51,436.09/70,989.36 = 31,289.06/x
  3. Step 3: Cross multiply
    51,436.09x = 70,989.36 × 31,289.06
  4. Step 4: Simplify right side
    51,436.09x = 2,221,189,833.01
  5. Step 5: Solve for x
    x = 2,221,189,833.01/51,436.09
  6. Step 6: Final answer
    x = 43,183.49

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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.