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Finding the Fourth Proportional to 73,043.71, 109,557.06 and 20,457.43

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Solution

The fourth proportional to 73,043.71, 109,557.06 and 20,457.43 is: 30,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,043.71 : 109,557.06 = 20,457.43 : x
  2. Step 2: Convert to fraction form
    73,043.71/109,557.06 = 20,457.43/x
  3. Step 3: Cross multiply
    73,043.71x = 109,557.06 × 20,457.43
  4. Step 4: Simplify right side
    73,043.71x = 2,241,255,885.96
  5. Step 5: Solve for x
    x = 2,241,255,885.96/73,043.71
  6. Step 6: Final answer
    x = 30,683.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.