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Finding the Fourth Proportional to 49,468.80, 68,271.28 and 28,254.88

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Solution

The fourth proportional to 49,468.80, 68,271.28 and 28,254.88 is: 38,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,468.80 : 68,271.28 = 28,254.88 : x
  2. Step 2: Convert to fraction form
    49,468.80/68,271.28 = 28,254.88/x
  3. Step 3: Cross multiply
    49,468.80x = 68,271.28 × 28,254.88
  4. Step 4: Simplify right side
    49,468.80x = 1,928,996,823.85
  5. Step 5: Solve for x
    x = 1,928,996,823.85/49,468.80
  6. Step 6: Final answer
    x = 38,994.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.