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Finding the Fourth Proportional to 67,637.88, 101,390.86 and 28,206.28

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Solution

The fourth proportional to 67,637.88, 101,390.86 and 28,206.28 is: 42,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,637.88 : 101,390.86 = 28,206.28 : x
  2. Step 2: Convert to fraction form
    67,637.88/101,390.86 = 28,206.28/x
  3. Step 3: Cross multiply
    67,637.88x = 101,390.86 × 28,206.28
  4. Step 4: Simplify right side
    67,637.88x = 2,859,858,986.60
  5. Step 5: Solve for x
    x = 2,859,858,986.60/67,637.88
  6. Step 6: Final answer
    x = 42,281.91

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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.