Home / 39,811.51-54,948.72-31,180.51

Finding the Fourth Proportional to 39,811.51, 54,948.72 and 31,180.51

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Solution

The fourth proportional to 39,811.51, 54,948.72 and 31,180.51 is: 43,036.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,811.51 : 54,948.72 = 31,180.51 : x
  2. Step 2: Convert to fraction form
    39,811.51/54,948.72 = 31,180.51/x
  3. Step 3: Cross multiply
    39,811.51x = 54,948.72 × 31,180.51
  4. Step 4: Simplify right side
    39,811.51x = 1,713,329,113.45
  5. Step 5: Solve for x
    x = 1,713,329,113.45/39,811.51
  6. Step 6: Final answer
    x = 43,036.02

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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.