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Finding the Fourth Proportional to 79,267.60, 109,307.64 and 55,385.56

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Solution

The fourth proportional to 79,267.60, 109,307.64 and 55,385.56 is: 76,375.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,267.60 : 109,307.64 = 55,385.56 : x
  2. Step 2: Convert to fraction form
    79,267.60/109,307.64 = 55,385.56/x
  3. Step 3: Cross multiply
    79,267.60x = 109,307.64 × 55,385.56
  4. Step 4: Simplify right side
    79,267.60x = 6,054,064,853.68
  5. Step 5: Solve for x
    x = 6,054,064,853.68/79,267.60
  6. Step 6: Final answer
    x = 76,375.02

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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.