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Finding the Fourth Proportional to 83,220.75, 114,844.64 and 45,495

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Solution

The fourth proportional to 83,220.75, 114,844.64 and 45,495 is: 62,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,220.75 : 114,844.64 = 45,495 : x
  2. Step 2: Convert to fraction form
    83,220.75/114,844.64 = 45,495/x
  3. Step 3: Cross multiply
    83,220.75x = 114,844.64 × 45,495
  4. Step 4: Simplify right side
    83,220.75x = 5,224,856,669.33
  5. Step 5: Solve for x
    x = 5,224,856,669.33/83,220.75
  6. Step 6: Final answer
    x = 62,783.10

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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.