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Finding the Fourth Proportional to 67,045.34, 100,589.86 and 31,980.44

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Solution

The fourth proportional to 67,045.34, 100,589.86 and 31,980.44 is: 47,981.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,045.34 : 100,589.86 = 31,980.44 : x
  2. Step 2: Convert to fraction form
    67,045.34/100,589.86 = 31,980.44/x
  3. Step 3: Cross multiply
    67,045.34x = 100,589.86 × 31,980.44
  4. Step 4: Simplify right side
    67,045.34x = 3,216,907,982.34
  5. Step 5: Solve for x
    x = 3,216,907,982.34/67,045.34
  6. Step 6: Final answer
    x = 47,981.08

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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.