Home / 90,567.72-135,984.87-50,664.90

Finding the Fourth Proportional to 90,567.72, 135,984.87 and 50,664.90

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Solution

The fourth proportional to 90,567.72, 135,984.87 and 50,664.90 is: 76,071.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,567.72 : 135,984.87 = 50,664.90 : x
  2. Step 2: Convert to fraction form
    90,567.72/135,984.87 = 50,664.90/x
  3. Step 3: Cross multiply
    90,567.72x = 135,984.87 × 50,664.90
  4. Step 4: Simplify right side
    90,567.72x = 6,889,659,840.06
  5. Step 5: Solve for x
    x = 6,889,659,840.06/90,567.72
  6. Step 6: Final answer
    x = 76,071.91

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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.