Home / 40,137.69-55,332.32-28,163.91

Finding the Fourth Proportional to 40,137.69, 55,332.32 and 28,163.91

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Solution

The fourth proportional to 40,137.69, 55,332.32 and 28,163.91 is: 38,825.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,137.69 : 55,332.32 = 28,163.91 : x
  2. Step 2: Convert to fraction form
    40,137.69/55,332.32 = 28,163.91/x
  3. Step 3: Cross multiply
    40,137.69x = 55,332.32 × 28,163.91
  4. Step 4: Simplify right side
    40,137.69x = 1,558,374,339.75
  5. Step 5: Solve for x
    x = 1,558,374,339.75/40,137.69
  6. Step 6: Final answer
    x = 38,825.71

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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.