Home / 65,399.22-90,253.88-38,542.86

Finding the Fourth Proportional to 65,399.22, 90,253.88 and 38,542.86

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Solution

The fourth proportional to 65,399.22, 90,253.88 and 38,542.86 is: 53,190.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,399.22 : 90,253.88 = 38,542.86 : x
  2. Step 2: Convert to fraction form
    65,399.22/90,253.88 = 38,542.86/x
  3. Step 3: Cross multiply
    65,399.22x = 90,253.88 × 38,542.86
  4. Step 4: Simplify right side
    65,399.22x = 3,478,642,661.30
  5. Step 5: Solve for x
    x = 3,478,642,661.30/65,399.22
  6. Step 6: Final answer
    x = 53,190.89

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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.