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Finding the Fourth Proportional to 73,041.53, 109,566.36 and 20,455.11

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Solution

The fourth proportional to 73,041.53, 109,566.36 and 20,455.11 is: 30,683.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,041.53 : 109,566.36 = 20,455.11 : x
  2. Step 2: Convert to fraction form
    73,041.53/109,566.36 = 20,455.11/x
  3. Step 3: Cross multiply
    73,041.53x = 109,566.36 × 20,455.11
  4. Step 4: Simplify right side
    73,041.53x = 2,241,191,946.10
  5. Step 5: Solve for x
    x = 2,241,191,946.10/73,041.53
  6. Step 6: Final answer
    x = 30,683.81

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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.