Home / 85,331.40-127,997.10-57,337.80

Finding the Fourth Proportional to 85,331.40, 127,997.10 and 57,337.80

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Solution

The fourth proportional to 85,331.40, 127,997.10 and 57,337.80 is: 86,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,331.40 : 127,997.10 = 57,337.80 : x
  2. Step 2: Convert to fraction form
    85,331.40/127,997.10 = 57,337.80/x
  3. Step 3: Cross multiply
    85,331.40x = 127,997.10 × 57,337.80
  4. Step 4: Simplify right side
    85,331.40x = 7,339,072,120.38
  5. Step 5: Solve for x
    x = 7,339,072,120.38/85,331.40
  6. Step 6: Final answer
    x = 86,006.70

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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.