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Finding the Fourth Proportional to 67,961.40, 101,966.40 and 28,530.60

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Solution

The fourth proportional to 67,961.40, 101,966.40 and 28,530.60 is: 42,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,961.40 : 101,966.40 = 28,530.60 : x
  2. Step 2: Convert to fraction form
    67,961.40/101,966.40 = 28,530.60/x
  3. Step 3: Cross multiply
    67,961.40x = 101,966.40 × 28,530.60
  4. Step 4: Simplify right side
    67,961.40x = 2,909,162,571.84
  5. Step 5: Solve for x
    x = 2,909,162,571.84/67,961.40
  6. Step 6: Final answer
    x = 42,806.10

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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.