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Finding the Fourth Proportional to 73,379.80, 110,069.70 and 38,311.30

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Solution

The fourth proportional to 73,379.80, 110,069.70 and 38,311.30 is: 57,466.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,379.80 : 110,069.70 = 38,311.30 : x
  2. Step 2: Convert to fraction form
    73,379.80/110,069.70 = 38,311.30/x
  3. Step 3: Cross multiply
    73,379.80x = 110,069.70 × 38,311.30
  4. Step 4: Simplify right side
    73,379.80x = 4,216,913,297.61
  5. Step 5: Solve for x
    x = 4,216,913,297.61/73,379.80
  6. Step 6: Final answer
    x = 57,466.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.