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Finding the Fourth Proportional to 67,622.40, 101,378.64 and 28,208.88

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Solution

The fourth proportional to 67,622.40, 101,378.64 and 28,208.88 is: 42,290.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,622.40 : 101,378.64 = 28,208.88 : x
  2. Step 2: Convert to fraction form
    67,622.40/101,378.64 = 28,208.88/x
  3. Step 3: Cross multiply
    67,622.40x = 101,378.64 × 28,208.88
  4. Step 4: Simplify right side
    67,622.40x = 2,859,777,890.32
  5. Step 5: Solve for x
    x = 2,859,777,890.32/67,622.40
  6. Step 6: Final answer
    x = 42,290.39

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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.