Home / 85,943.32-128,783.12-35,996.09

Finding the Fourth Proportional to 85,943.32, 128,783.12 and 35,996.09

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Solution

The fourth proportional to 85,943.32, 128,783.12 and 35,996.09 is: 53,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,943.32 : 128,783.12 = 35,996.09 : x
  2. Step 2: Convert to fraction form
    85,943.32/128,783.12 = 35,996.09/x
  3. Step 3: Cross multiply
    85,943.32x = 128,783.12 × 35,996.09
  4. Step 4: Simplify right side
    85,943.32x = 4,635,687,954.10
  5. Step 5: Solve for x
    x = 4,635,687,954.10/85,943.32
  6. Step 6: Final answer
    x = 53,938.90

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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.