Home / 55,912.29-77,079.78-39,969.06

Finding the Fourth Proportional to 55,912.29, 77,079.78 and 39,969.06

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Solution

The fourth proportional to 55,912.29, 77,079.78 and 39,969.06 is: 55,100.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,912.29 : 77,079.78 = 39,969.06 : x
  2. Step 2: Convert to fraction form
    55,912.29/77,079.78 = 39,969.06/x
  3. Step 3: Cross multiply
    55,912.29x = 77,079.78 × 39,969.06
  4. Step 4: Simplify right side
    55,912.29x = 3,080,806,351.61
  5. Step 5: Solve for x
    x = 3,080,806,351.61/55,912.29
  6. Step 6: Final answer
    x = 55,100.70

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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.