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Finding the Fourth Proportional to 67,951.40, 101,975.70 and 28,536.80

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Solution

The fourth proportional to 67,951.40, 101,975.70 and 28,536.80 is: 42,825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,951.40 : 101,975.70 = 28,536.80 : x
  2. Step 2: Convert to fraction form
    67,951.40/101,975.70 = 28,536.80/x
  3. Step 3: Cross multiply
    67,951.40x = 101,975.70 × 28,536.80
  4. Step 4: Simplify right side
    67,951.40x = 2,910,060,155.76
  5. Step 5: Solve for x
    x = 2,910,060,155.76/67,951.40
  6. Step 6: Final answer
    x = 42,825.61

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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.