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Finding the Fourth Proportional to 100,497.84, 150,748.20 and 47,912.88

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Solution

The fourth proportional to 100,497.84, 150,748.20 and 47,912.88 is: 71,870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,497.84 : 150,748.20 = 47,912.88 : x
  2. Step 2: Convert to fraction form
    100,497.84/150,748.20 = 47,912.88/x
  3. Step 3: Cross multiply
    100,497.84x = 150,748.20 × 47,912.88
  4. Step 4: Simplify right side
    100,497.84x = 7,222,780,416.82
  5. Step 5: Solve for x
    x = 7,222,780,416.82/100,497.84
  6. Step 6: Final answer
    x = 71,870.01

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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.