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Finding the Fourth Proportional to 79,117.66, 109,182.41 and 43,307.88

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Solution

The fourth proportional to 79,117.66, 109,182.41 and 43,307.88 is: 59,764.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,117.66 : 109,182.41 = 43,307.88 : x
  2. Step 2: Convert to fraction form
    79,117.66/109,182.41 = 43,307.88/x
  3. Step 3: Cross multiply
    79,117.66x = 109,182.41 × 43,307.88
  4. Step 4: Simplify right side
    79,117.66x = 4,728,458,710.39
  5. Step 5: Solve for x
    x = 4,728,458,710.39/79,117.66
  6. Step 6: Final answer
    x = 59,764.90

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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.