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Finding the Fourth Proportional to 37,911.30, 56,820.80 and 26,821.20

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Solution

The fourth proportional to 37,911.30, 56,820.80 and 26,821.20 is: 40,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,911.30 : 56,820.80 = 26,821.20 : x
  2. Step 2: Convert to fraction form
    37,911.30/56,820.80 = 26,821.20/x
  3. Step 3: Cross multiply
    37,911.30x = 56,820.80 × 26,821.20
  4. Step 4: Simplify right side
    37,911.30x = 1,524,002,040.96
  5. Step 5: Solve for x
    x = 1,524,002,040.96/37,911.30
  6. Step 6: Final answer
    x = 40,199.15

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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.