Home / 30,172.22-45,260.55-7,985.45

Finding the Fourth Proportional to 30,172.22, 45,260.55 and 7,985.45

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Solution

The fourth proportional to 30,172.22, 45,260.55 and 7,985.45 is: 11,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.22 : 45,260.55 = 7,985.45 : x
  2. Step 2: Convert to fraction form
    30,172.22/45,260.55 = 7,985.45/x
  3. Step 3: Cross multiply
    30,172.22x = 45,260.55 × 7,985.45
  4. Step 4: Simplify right side
    30,172.22x = 361,425,632.69
  5. Step 5: Solve for x
    x = 361,425,632.69/30,172.22
  6. Step 6: Final answer
    x = 11,978.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.