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Finding the Fourth Proportional to 73,457.46, 110,186.19 and 20,860.11

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Solution

The fourth proportional to 73,457.46, 110,186.19 and 20,860.11 is: 31,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,457.46 : 110,186.19 = 20,860.11 : x
  2. Step 2: Convert to fraction form
    73,457.46/110,186.19 = 20,860.11/x
  3. Step 3: Cross multiply
    73,457.46x = 110,186.19 × 20,860.11
  4. Step 4: Simplify right side
    73,457.46x = 2,298,496,043.88
  5. Step 5: Solve for x
    x = 2,298,496,043.88/73,457.46
  6. Step 6: Final answer
    x = 31,290.17

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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.