Home / 79,679.16-109,956.60-43,869.76

Finding the Fourth Proportional to 79,679.16, 109,956.60 and 43,869.76

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Solution

The fourth proportional to 79,679.16, 109,956.60 and 43,869.76 is: 60,539.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,679.16 : 109,956.60 = 43,869.76 : x
  2. Step 2: Convert to fraction form
    79,679.16/109,956.60 = 43,869.76/x
  3. Step 3: Cross multiply
    79,679.16x = 109,956.60 × 43,869.76
  4. Step 4: Simplify right side
    79,679.16x = 4,823,769,652.42
  5. Step 5: Solve for x
    x = 4,823,769,652.42/79,679.16
  6. Step 6: Final answer
    x = 60,539.92

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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.