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Finding the Fourth Proportional to 83,311.61, 124,911.99 and 45,889.38

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Solution

The fourth proportional to 83,311.61, 124,911.99 and 45,889.38 is: 68,803.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,311.61 : 124,911.99 = 45,889.38 : x
  2. Step 2: Convert to fraction form
    83,311.61/124,911.99 = 45,889.38/x
  3. Step 3: Cross multiply
    83,311.61x = 124,911.99 × 45,889.38
  4. Step 4: Simplify right side
    83,311.61x = 5,732,133,775.67
  5. Step 5: Solve for x
    x = 5,732,133,775.67/83,311.61
  6. Step 6: Final answer
    x = 68,803.55

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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.