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Finding the Fourth Proportional to 79,297.46, 109,420.41 and 45,308.15

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Solution

The fourth proportional to 79,297.46, 109,420.41 and 45,308.15 is: 62,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,297.46 : 109,420.41 = 45,308.15 : x
  2. Step 2: Convert to fraction form
    79,297.46/109,420.41 = 45,308.15/x
  3. Step 3: Cross multiply
    79,297.46x = 109,420.41 × 45,308.15
  4. Step 4: Simplify right side
    79,297.46x = 4,957,636,122.80
  5. Step 5: Solve for x
    x = 4,957,636,122.80/79,297.46
  6. Step 6: Final answer
    x = 62,519.48

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1.5x scale

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.