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Finding the Fourth Proportional to 115,245.40, 172,867.80 and 32,139.40

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Solution

The fourth proportional to 115,245.40, 172,867.80 and 32,139.40 is: 48,209.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,245.40 : 172,867.80 = 32,139.40 : x
  2. Step 2: Convert to fraction form
    115,245.40/172,867.80 = 32,139.40/x
  3. Step 3: Cross multiply
    115,245.40x = 172,867.80 × 32,139.40
  4. Step 4: Simplify right side
    115,245.40x = 5,555,867,371.32
  5. Step 5: Solve for x
    x = 5,555,867,371.32/115,245.40
  6. Step 6: Final answer
    x = 48,209.02

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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.