Home / 85,499.45-128,249.20-22,319.39

Finding the Fourth Proportional to 85,499.45, 128,249.20 and 22,319.39

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Solution

The fourth proportional to 85,499.45, 128,249.20 and 22,319.39 is: 33,479.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,499.45 : 128,249.20 = 22,319.39 : x
  2. Step 2: Convert to fraction form
    85,499.45/128,249.20 = 22,319.39/x
  3. Step 3: Cross multiply
    85,499.45x = 128,249.20 × 22,319.39
  4. Step 4: Simplify right side
    85,499.45x = 2,862,443,911.99
  5. Step 5: Solve for x
    x = 2,862,443,911.99/85,499.45
  6. Step 6: Final answer
    x = 33,479.09

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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.