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Finding the Fourth Proportional to 71,326.70, 106,990.05 and 43,333.10

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Solution

The fourth proportional to 71,326.70, 106,990.05 and 43,333.10 is: 64,999.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,326.70 : 106,990.05 = 43,333.10 : x
  2. Step 2: Convert to fraction form
    71,326.70/106,990.05 = 43,333.10/x
  3. Step 3: Cross multiply
    71,326.70x = 106,990.05 × 43,333.10
  4. Step 4: Simplify right side
    71,326.70x = 4,636,210,535.66
  5. Step 5: Solve for x
    x = 4,636,210,535.66/71,326.70
  6. Step 6: Final answer
    x = 64,999.65

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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.