Home / 39,936.32-55,054.86-31,423.76

Finding the Fourth Proportional to 39,936.32, 55,054.86 and 31,423.76

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Solution

The fourth proportional to 39,936.32, 55,054.86 and 31,423.76 is: 43,319.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,936.32 : 55,054.86 = 31,423.76 : x
  2. Step 2: Convert to fraction form
    39,936.32/55,054.86 = 31,423.76/x
  3. Step 3: Cross multiply
    39,936.32x = 55,054.86 × 31,423.76
  4. Step 4: Simplify right side
    39,936.32x = 1,730,030,707.47
  5. Step 5: Solve for x
    x = 1,730,030,707.47/39,936.32
  6. Step 6: Final answer
    x = 43,319.73

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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.