Home / 65,356.22-90,221.45-50,243.58

Finding the Fourth Proportional to 65,356.22, 90,221.45 and 50,243.58

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Solution

The fourth proportional to 65,356.22, 90,221.45 and 50,243.58 is: 69,359.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,356.22 : 90,221.45 = 50,243.58 : x
  2. Step 2: Convert to fraction form
    65,356.22/90,221.45 = 50,243.58/x
  3. Step 3: Cross multiply
    65,356.22x = 90,221.45 × 50,243.58
  4. Step 4: Simplify right side
    65,356.22x = 4,533,048,389.57
  5. Step 5: Solve for x
    x = 4,533,048,389.57/65,356.22
  6. Step 6: Final answer
    x = 69,359.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.