Home / 85,824.10-128,718.54-32,497.68

Finding the Fourth Proportional to 85,824.10, 128,718.54 and 32,497.68

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Solution

The fourth proportional to 85,824.10, 128,718.54 and 32,497.68 is: 48,739.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824.10 : 128,718.54 = 32,497.68 : x
  2. Step 2: Convert to fraction form
    85,824.10/128,718.54 = 32,497.68/x
  3. Step 3: Cross multiply
    85,824.10x = 128,718.54 × 32,497.68
  4. Step 4: Simplify right side
    85,824.10x = 4,183,053,922.99
  5. Step 5: Solve for x
    x = 4,183,053,922.99/85,824.10
  6. Step 6: Final answer
    x = 48,739.85

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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.