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Finding the Fourth Proportional to 67,685.76, 101,453.12 and 28,229.76

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Solution

The fourth proportional to 67,685.76, 101,453.12 and 28,229.76 is: 42,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,685.76 : 101,453.12 = 28,229.76 : x
  2. Step 2: Convert to fraction form
    67,685.76/101,453.12 = 28,229.76/x
  3. Step 3: Cross multiply
    67,685.76x = 101,453.12 × 28,229.76
  4. Step 4: Simplify right side
    67,685.76x = 2,863,997,228.85
  5. Step 5: Solve for x
    x = 2,863,997,228.85/67,685.76
  6. Step 6: Final answer
    x = 42,313.14

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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.