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Finding the Fourth Proportional to 64,990.86, 97,489.74 and 18,247.38

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Solution

The fourth proportional to 64,990.86, 97,489.74 and 18,247.38 is: 27,372.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.86 : 97,489.74 = 18,247.38 : x
  2. Step 2: Convert to fraction form
    64,990.86/97,489.74 = 18,247.38/x
  3. Step 3: Cross multiply
    64,990.86x = 97,489.74 × 18,247.38
  4. Step 4: Simplify right side
    64,990.86x = 1,778,932,331.88
  5. Step 5: Solve for x
    x = 1,778,932,331.88/64,990.86
  6. Step 6: Final answer
    x = 27,372.04

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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.