Home / 39,810.51-54,947.34-31,179.51

Finding the Fourth Proportional to 39,810.51, 54,947.34 and 31,179.51

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Solution

The fourth proportional to 39,810.51, 54,947.34 and 31,179.51 is: 43,034.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,810.51 : 54,947.34 = 31,179.51 : x
  2. Step 2: Convert to fraction form
    39,810.51/54,947.34 = 31,179.51/x
  3. Step 3: Cross multiply
    39,810.51x = 54,947.34 × 31,179.51
  4. Step 4: Simplify right side
    39,810.51x = 1,713,231,137.00
  5. Step 5: Solve for x
    x = 1,713,231,137.00/39,810.51
  6. Step 6: Final answer
    x = 43,034.64

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1.5x scale

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.