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Finding the Fourth Proportional to 67,894.20, 101,800.40 and 30,447.50

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Solution

The fourth proportional to 67,894.20, 101,800.40 and 30,447.50 is: 45,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,894.20 : 101,800.40 = 30,447.50 : x
  2. Step 2: Convert to fraction form
    67,894.20/101,800.40 = 30,447.50/x
  3. Step 3: Cross multiply
    67,894.20x = 101,800.40 × 30,447.50
  4. Step 4: Simplify right side
    67,894.20x = 3,099,567,017.76
  5. Step 5: Solve for x
    x = 3,099,567,017.76/67,894.20
  6. Step 6: Final answer
    x = 45,652.90

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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.