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Finding the Fourth Proportional to 87,297.64, 120,484.44 and 51,491.62

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Solution

The fourth proportional to 87,297.64, 120,484.44 and 51,491.62 is: 71,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,297.64 : 120,484.44 = 51,491.62 : x
  2. Step 2: Convert to fraction form
    87,297.64/120,484.44 = 51,491.62/x
  3. Step 3: Cross multiply
    87,297.64x = 120,484.44 × 51,491.62
  4. Step 4: Simplify right side
    87,297.64x = 6,203,939,000.39
  5. Step 5: Solve for x
    x = 6,203,939,000.39/87,297.64
  6. Step 6: Final answer
    x = 71,066.51

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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.