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Finding the Fourth Proportional to 79,271, 109,398.84 and 45,737

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Solution

The fourth proportional to 79,271, 109,398.84 and 45,737 is: 63,119.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,271 : 109,398.84 = 45,737 : x
  2. Step 2: Convert to fraction form
    79,271/109,398.84 = 45,737/x
  3. Step 3: Cross multiply
    79,271x = 109,398.84 × 45,737
  4. Step 4: Simplify right side
    79,271x = 5,003,574,745.08
  5. Step 5: Solve for x
    x = 5,003,574,745.08/79,271
  6. Step 6: Final answer
    x = 63,119.86

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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.