Home / 72,899.64-109,346.76-30,195.36

Finding the Fourth Proportional to 72,899.64, 109,346.76 and 30,195.36

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Solution

The fourth proportional to 72,899.64, 109,346.76 and 30,195.36 is: 45,291.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,899.64 : 109,346.76 = 30,195.36 : x
  2. Step 2: Convert to fraction form
    72,899.64/109,346.76 = 30,195.36/x
  3. Step 3: Cross multiply
    72,899.64x = 109,346.76 × 30,195.36
  4. Step 4: Simplify right side
    72,899.64x = 3,301,764,783.03
  5. Step 5: Solve for x
    x = 3,301,764,783.03/72,899.64
  6. Step 6: Final answer
    x = 45,291.92

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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.