Home / 30,163.74-45,000.69-28,530.78

Finding the Fourth Proportional to 30,163.74, 45,000.69 and 28,530.78

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Solution

The fourth proportional to 30,163.74, 45,000.69 and 28,530.78 is: 42,564.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,163.74 : 45,000.69 = 28,530.78 : x
  2. Step 2: Convert to fraction form
    30,163.74/45,000.69 = 28,530.78/x
  3. Step 3: Cross multiply
    30,163.74x = 45,000.69 × 28,530.78
  4. Step 4: Simplify right side
    30,163.74x = 1,283,904,786.24
  5. Step 5: Solve for x
    x = 1,283,904,786.24/30,163.74
  6. Step 6: Final answer
    x = 42,564.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.