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Finding the Fourth Proportional to 115,000.40, 172,500.60 and 30,760.40

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Solution

The fourth proportional to 115,000.40, 172,500.60 and 30,760.40 is: 46,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,000.40 : 172,500.60 = 30,760.40 : x
  2. Step 2: Convert to fraction form
    115,000.40/172,500.60 = 30,760.40/x
  3. Step 3: Cross multiply
    115,000.40x = 172,500.60 × 30,760.40
  4. Step 4: Simplify right side
    115,000.40x = 5,306,187,456.24
  5. Step 5: Solve for x
    x = 5,306,187,456.24/115,000.40
  6. Step 6: Final answer
    x = 46,140.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.