Home / 75,720.06-113,507.76-28,322.30

Finding the Fourth Proportional to 75,720.06, 113,507.76 and 28,322.30

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Solution

The fourth proportional to 75,720.06, 113,507.76 and 28,322.30 is: 42,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,720.06 : 113,507.76 = 28,322.30 : x
  2. Step 2: Convert to fraction form
    75,720.06/113,507.76 = 28,322.30/x
  3. Step 3: Cross multiply
    75,720.06x = 113,507.76 × 28,322.30
  4. Step 4: Simplify right side
    75,720.06x = 3,214,801,221.03
  5. Step 5: Solve for x
    x = 3,214,801,221.03/75,720.06
  6. Step 6: Final answer
    x = 42,456.40

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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.