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Finding the Fourth Proportional to 79,205.72, 109,302.56 and 45,216.08

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Solution

The fourth proportional to 79,205.72, 109,302.56 and 45,216.08 is: 62,397.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.72 : 109,302.56 = 45,216.08 : x
  2. Step 2: Convert to fraction form
    79,205.72/109,302.56 = 45,216.08/x
  3. Step 3: Cross multiply
    79,205.72x = 109,302.56 × 45,216.08
  4. Step 4: Simplify right side
    79,205.72x = 4,942,233,297.16
  5. Step 5: Solve for x
    x = 4,942,233,297.16/79,205.72
  6. Step 6: Final answer
    x = 62,397.43

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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.