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Finding the Fourth Proportional to 76,820.73, 115,234.74 and 37,330.80

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Solution

The fourth proportional to 76,820.73, 115,234.74 and 37,330.80 is: 55,997.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,820.73 : 115,234.74 = 37,330.80 : x
  2. Step 2: Convert to fraction form
    76,820.73/115,234.74 = 37,330.80/x
  3. Step 3: Cross multiply
    76,820.73x = 115,234.74 × 37,330.80
  4. Step 4: Simplify right side
    76,820.73x = 4,301,805,031.99
  5. Step 5: Solve for x
    x = 4,301,805,031.99/76,820.73
  6. Step 6: Final answer
    x = 55,997.97

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1.5x scale

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.