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Finding the Fourth Proportional to 79,321.19, 109,461.24 and 45,327.51

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Solution

The fourth proportional to 79,321.19, 109,461.24 and 45,327.51 is: 62,550.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,321.19 : 109,461.24 = 45,327.51 : x
  2. Step 2: Convert to fraction form
    79,321.19/109,461.24 = 45,327.51/x
  3. Step 3: Cross multiply
    79,321.19x = 109,461.24 × 45,327.51
  4. Step 4: Simplify right side
    79,321.19x = 4,961,605,497.73
  5. Step 5: Solve for x
    x = 4,961,605,497.73/79,321.19
  6. Step 6: Final answer
    x = 62,550.82

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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.