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Finding the Fourth Proportional to 84,763.88, 117,020.43 and 57,945.80

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Solution

The fourth proportional to 84,763.88, 117,020.43 and 57,945.80 is: 79,996.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,763.88 : 117,020.43 = 57,945.80 : x
  2. Step 2: Convert to fraction form
    84,763.88/117,020.43 = 57,945.80/x
  3. Step 3: Cross multiply
    84,763.88x = 117,020.43 × 57,945.80
  4. Step 4: Simplify right side
    84,763.88x = 6,780,841,847.59
  5. Step 5: Solve for x
    x = 6,780,841,847.59/84,763.88
  6. Step 6: Final answer
    x = 79,996.84

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1.5x scale

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.