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Finding the Fourth Proportional to 83,921.88, 115,814.62 and 45,683.90

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Solution

The fourth proportional to 83,921.88, 115,814.62 and 45,683.90 is: 63,045.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,921.88 : 115,814.62 = 45,683.90 : x
  2. Step 2: Convert to fraction form
    83,921.88/115,814.62 = 45,683.90/x
  3. Step 3: Cross multiply
    83,921.88x = 115,814.62 × 45,683.90
  4. Step 4: Simplify right side
    83,921.88x = 5,290,863,608.29
  5. Step 5: Solve for x
    x = 5,290,863,608.29/83,921.88
  6. Step 6: Final answer
    x = 63,045.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.