Home / 39,080.80-53,956-30,111.28

Finding the Fourth Proportional to 39,080.80, 53,956 and 30,111.28

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Solution

The fourth proportional to 39,080.80, 53,956 and 30,111.28 is: 41,572.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,080.80 : 53,956 = 30,111.28 : x
  2. Step 2: Convert to fraction form
    39,080.80/53,956 = 30,111.28/x
  3. Step 3: Cross multiply
    39,080.80x = 53,956 × 30,111.28
  4. Step 4: Simplify right side
    39,080.80x = 1,624,684,223.68
  5. Step 5: Solve for x
    x = 1,624,684,223.68/39,080.80
  6. Step 6: Final answer
    x = 41,572.44

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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.