Home / 85,586.32-128,409.84-38,197.04

Finding the Fourth Proportional to 85,586.32, 128,409.84 and 38,197.04

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Solution

The fourth proportional to 85,586.32, 128,409.84 and 38,197.04 is: 57,309.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,586.32 : 128,409.84 = 38,197.04 : x
  2. Step 2: Convert to fraction form
    85,586.32/128,409.84 = 38,197.04/x
  3. Step 3: Cross multiply
    85,586.32x = 128,409.84 × 38,197.04
  4. Step 4: Simplify right side
    85,586.32x = 4,904,875,794.87
  5. Step 5: Solve for x
    x = 4,904,875,794.87/85,586.32
  6. Step 6: Final answer
    x = 57,309.11

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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.