Home / 85,191.52-127,683.60-38,431.84

Finding the Fourth Proportional to 85,191.52, 127,683.60 and 38,431.84

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Solution

The fourth proportional to 85,191.52, 127,683.60 and 38,431.84 is: 57,600.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,191.52 : 127,683.60 = 38,431.84 : x
  2. Step 2: Convert to fraction form
    85,191.52/127,683.60 = 38,431.84/x
  3. Step 3: Cross multiply
    85,191.52x = 127,683.60 × 38,431.84
  4. Step 4: Simplify right side
    85,191.52x = 4,907,115,685.82
  5. Step 5: Solve for x
    x = 4,907,115,685.82/85,191.52
  6. Step 6: Final answer
    x = 57,600.99

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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.