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Finding the Fourth Proportional to 79,895.88, 110,722.44 and 78,768.36

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Solution

The fourth proportional to 79,895.88, 110,722.44 and 78,768.36 is: 109,159.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,895.88 : 110,722.44 = 78,768.36 : x
  2. Step 2: Convert to fraction form
    79,895.88/110,722.44 = 78,768.36/x
  3. Step 3: Cross multiply
    79,895.88x = 110,722.44 × 78,768.36
  4. Step 4: Simplify right side
    79,895.88x = 8,721,425,014.00
  5. Step 5: Solve for x
    x = 8,721,425,014.00/79,895.88
  6. Step 6: Final answer
    x = 109,159.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.