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Finding the Fourth Proportional to 67,448.34, 101,170.08 and 20,700

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Solution

The fourth proportional to 67,448.34, 101,170.08 and 20,700 is: 31,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,448.34 : 101,170.08 = 20,700 : x
  2. Step 2: Convert to fraction form
    67,448.34/101,170.08 = 20,700/x
  3. Step 3: Cross multiply
    67,448.34x = 101,170.08 × 20,700
  4. Step 4: Simplify right side
    67,448.34x = 2,094,220,656
  5. Step 5: Solve for x
    x = 2,094,220,656/67,448.34
  6. Step 6: Final answer
    x = 31,049.25

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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.