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Finding the Fourth Proportional to 79,521.55, 109,739.81 and 43,713.91

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Solution

The fourth proportional to 79,521.55, 109,739.81 and 43,713.91 is: 60,325.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,521.55 : 109,739.81 = 43,713.91 : x
  2. Step 2: Convert to fraction form
    79,521.55/109,739.81 = 43,713.91/x
  3. Step 3: Cross multiply
    79,521.55x = 109,739.81 × 43,713.91
  4. Step 4: Simplify right side
    79,521.55x = 4,797,156,424.22
  5. Step 5: Solve for x
    x = 4,797,156,424.22/79,521.55
  6. Step 6: Final answer
    x = 60,325.24

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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.