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Finding the Fourth Proportional to 67,647.81, 101,443.17 and 20,269.63

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Solution

The fourth proportional to 67,647.81, 101,443.17 and 20,269.63 is: 30,395.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,647.81 : 101,443.17 = 20,269.63 : x
  2. Step 2: Convert to fraction form
    67,647.81/101,443.17 = 20,269.63/x
  3. Step 3: Cross multiply
    67,647.81x = 101,443.17 × 20,269.63
  4. Step 4: Simplify right side
    67,647.81x = 2,056,215,521.93
  5. Step 5: Solve for x
    x = 2,056,215,521.93/67,647.81
  6. Step 6: Final answer
    x = 30,395.89

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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.