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Finding the Fourth Proportional to 72,260.47, 108,379.77 and 19,674.10

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Solution

The fourth proportional to 72,260.47, 108,379.77 and 19,674.10 is: 29,508.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,260.47 : 108,379.77 = 19,674.10 : x
  2. Step 2: Convert to fraction form
    72,260.47/108,379.77 = 19,674.10/x
  3. Step 3: Cross multiply
    72,260.47x = 108,379.77 × 19,674.10
  4. Step 4: Simplify right side
    72,260.47x = 2,132,274,432.96
  5. Step 5: Solve for x
    x = 2,132,274,432.96/72,260.47
  6. Step 6: Final answer
    x = 29,508.17

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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.