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Finding the Fourth Proportional to 73,102,912.80, 109,654,369.20 and 56,840,818.20

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Solution

The fourth proportional to 73,102,912.80, 109,654,369.20 and 56,840,818.20 is: 85,261,227.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,102,912.80 : 109,654,369.20 = 56,840,818.20 : x
  2. Step 2: Convert to fraction form
    73,102,912.80/109,654,369.20 = 56,840,818.20/x
  3. Step 3: Cross multiply
    73,102,912.80x = 109,654,369.20 × 56,840,818.20
  4. Step 4: Simplify right side
    73,102,912.80x = 6,232,844,064,532,880
  5. Step 5: Solve for x
    x = 6,232,844,064,532,880/73,102,912.80
  6. Step 6: Final answer
    x = 85,261,227.30

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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.