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Finding the Fourth Proportional to 79,679.58, 109,956.26 and 43,870.19

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Solution

The fourth proportional to 79,679.58, 109,956.26 and 43,870.19 is: 60,539.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,679.58 : 109,956.26 = 43,870.19 : x
  2. Step 2: Convert to fraction form
    79,679.58/109,956.26 = 43,870.19/x
  3. Step 3: Cross multiply
    79,679.58x = 109,956.26 × 43,870.19
  4. Step 4: Simplify right side
    79,679.58x = 4,823,801,248.76
  5. Step 5: Solve for x
    x = 4,823,801,248.76/79,679.58
  6. Step 6: Final answer
    x = 60,539.99

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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.