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Finding the Fourth Proportional to 79,710.56, 109,999.87 and 43,899.80

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Solution

The fourth proportional to 79,710.56, 109,999.87 and 43,899.80 is: 60,581.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,710.56 : 109,999.87 = 43,899.80 : x
  2. Step 2: Convert to fraction form
    79,710.56/109,999.87 = 43,899.80/x
  3. Step 3: Cross multiply
    79,710.56x = 109,999.87 × 43,899.80
  4. Step 4: Simplify right side
    79,710.56x = 4,828,972,189.59
  5. Step 5: Solve for x
    x = 4,828,972,189.59/79,710.56
  6. Step 6: Final answer
    x = 60,581.34

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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.