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Finding the Fourth Proportional to 71,841.84, 99,107.40 and 55,816.62

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Solution

The fourth proportional to 71,841.84, 99,107.40 and 55,816.62 is: 77,000.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,841.84 : 99,107.40 = 55,816.62 : x
  2. Step 2: Convert to fraction form
    71,841.84/99,107.40 = 55,816.62/x
  3. Step 3: Cross multiply
    71,841.84x = 99,107.40 × 55,816.62
  4. Step 4: Simplify right side
    71,841.84x = 5,531,840,084.99
  5. Step 5: Solve for x
    x = 5,531,840,084.99/71,841.84
  6. Step 6: Final answer
    x = 77,000.26

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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.