Home / 39,171.63-54,004.64-31,132.13

Finding the Fourth Proportional to 39,171.63, 54,004.64 and 31,132.13

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Solution

The fourth proportional to 39,171.63, 54,004.64 and 31,132.13 is: 42,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,171.63 : 54,004.64 = 31,132.13 : x
  2. Step 2: Convert to fraction form
    39,171.63/54,004.64 = 31,132.13/x
  3. Step 3: Cross multiply
    39,171.63x = 54,004.64 × 31,132.13
  4. Step 4: Simplify right side
    39,171.63x = 1,681,279,473.08
  5. Step 5: Solve for x
    x = 1,681,279,473.08/39,171.63
  6. Step 6: Final answer
    x = 42,920.85

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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.