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Finding the Fourth Proportional to 28,133,956.42, 42,200,474.01 and 8,964,454.30

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Solution

The fourth proportional to 28,133,956.42, 42,200,474.01 and 8,964,454.30 is: 13,446,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133,956.42 : 42,200,474.01 = 8,964,454.30 : x
  2. Step 2: Convert to fraction form
    28,133,956.42/42,200,474.01 = 8,964,454.30/x
  3. Step 3: Cross multiply
    28,133,956.42x = 42,200,474.01 × 8,964,454.30
  4. Step 4: Simplify right side
    28,133,956.42x = 378,304,220,700,982.75
  5. Step 5: Solve for x
    x = 378,304,220,700,982.75/28,133,956.42
  6. Step 6: Final answer
    x = 13,446,534.68

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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.