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Finding the Fourth Proportional to 67,703.59, 101,489.09 and 28,271.98

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Solution

The fourth proportional to 67,703.59, 101,489.09 and 28,271.98 is: 42,380.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,703.59 : 101,489.09 = 28,271.98 : x
  2. Step 2: Convert to fraction form
    67,703.59/101,489.09 = 28,271.98/x
  3. Step 3: Cross multiply
    67,703.59x = 101,489.09 × 28,271.98
  4. Step 4: Simplify right side
    67,703.59x = 2,869,297,015.25
  5. Step 5: Solve for x
    x = 2,869,297,015.25/67,703.59
  6. Step 6: Final answer
    x = 42,380.28

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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.