Home / 85,905.11-128,832.95-35,984.00

Finding the Fourth Proportional to 85,905.11, 128,832.95 and 35,984.00

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Solution

The fourth proportional to 85,905.11, 128,832.95 and 35,984.00 is: 53,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,905.11 : 128,832.95 = 35,984.00 : x
  2. Step 2: Convert to fraction form
    85,905.11/128,832.95 = 35,984.00/x
  3. Step 3: Cross multiply
    85,905.11x = 128,832.95 × 35,984.00
  4. Step 4: Simplify right side
    85,905.11x = 4,635,924,048.72
  5. Step 5: Solve for x
    x = 4,635,924,048.72/85,905.11
  6. Step 6: Final answer
    x = 53,965.64

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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.