Home / 85,577.28-128,396.32-38,188.06

Finding the Fourth Proportional to 85,577.28, 128,396.32 and 38,188.06

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Solution

The fourth proportional to 85,577.28, 128,396.32 and 38,188.06 is: 57,295.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,577.28 : 128,396.32 = 38,188.06 : x
  2. Step 2: Convert to fraction form
    85,577.28/128,396.32 = 38,188.06/x
  3. Step 3: Cross multiply
    85,577.28x = 128,396.32 × 38,188.06
  4. Step 4: Simplify right side
    85,577.28x = 4,903,206,170.29
  5. Step 5: Solve for x
    x = 4,903,206,170.29/85,577.28
  6. Step 6: Final answer
    x = 57,295.66

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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.