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Finding the Fourth Proportional to 68,651,011.90, 102,976,517.85 and 36,290,410.30

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Solution

The fourth proportional to 68,651,011.90, 102,976,517.85 and 36,290,410.30 is: 54,435,615.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,651,011.90 : 102,976,517.85 = 36,290,410.30 : x
  2. Step 2: Convert to fraction form
    68,651,011.90/102,976,517.85 = 36,290,410.30/x
  3. Step 3: Cross multiply
    68,651,011.90x = 102,976,517.85 × 36,290,410.30
  4. Step 4: Simplify right side
    68,651,011.90x = 3,737,060,084,041,773.50
  5. Step 5: Solve for x
    x = 3,737,060,084,041,773.50/68,651,011.90
  6. Step 6: Final answer
    x = 54,435,615.45

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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.