Home / 85,517.30-128,282.45-29,356.97

Finding the Fourth Proportional to 85,517.30, 128,282.45 and 29,356.97

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Solution

The fourth proportional to 85,517.30, 128,282.45 and 29,356.97 is: 44,037.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.30 : 128,282.45 = 29,356.97 : x
  2. Step 2: Convert to fraction form
    85,517.30/128,282.45 = 29,356.97/x
  3. Step 3: Cross multiply
    85,517.30x = 128,282.45 × 29,356.97
  4. Step 4: Simplify right side
    85,517.30x = 3,765,983,247.98
  5. Step 5: Solve for x
    x = 3,765,983,247.98/85,517.30
  6. Step 6: Final answer
    x = 44,037.68

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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.