Home / 85,317.40-127,974.90-38,570.20

Finding the Fourth Proportional to 85,317.40, 127,974.90 and 38,570.20

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Solution

The fourth proportional to 85,317.40, 127,974.90 and 38,570.20 is: 57,854.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,317.40 : 127,974.90 = 38,570.20 : x
  2. Step 2: Convert to fraction form
    85,317.40/127,974.90 = 38,570.20/x
  3. Step 3: Cross multiply
    85,317.40x = 127,974.90 × 38,570.20
  4. Step 4: Simplify right side
    85,317.40x = 4,936,017,487.98
  5. Step 5: Solve for x
    x = 4,936,017,487.98/85,317.40
  6. Step 6: Final answer
    x = 57,854.76

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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.