Home / 39,171.13-54,003.95-31,131.63

Finding the Fourth Proportional to 39,171.13, 54,003.95 and 31,131.63

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Solution

The fourth proportional to 39,171.13, 54,003.95 and 31,131.63 is: 42,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,171.13 : 54,003.95 = 31,131.63 : x
  2. Step 2: Convert to fraction form
    39,171.13/54,003.95 = 31,131.63/x
  3. Step 3: Cross multiply
    39,171.13x = 54,003.95 × 31,131.63
  4. Step 4: Simplify right side
    39,171.13x = 1,681,230,989.94
  5. Step 5: Solve for x
    x = 1,681,230,989.94/39,171.13
  6. Step 6: Final answer
    x = 42,920.16

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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.