Home / 71,929.46-99,262.66-40,100.42

Finding the Fourth Proportional to 71,929.46, 99,262.66 and 40,100.42

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Solution

The fourth proportional to 71,929.46, 99,262.66 and 40,100.42 is: 55,338.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,929.46 : 99,262.66 = 40,100.42 : x
  2. Step 2: Convert to fraction form
    71,929.46/99,262.66 = 40,100.42/x
  3. Step 3: Cross multiply
    71,929.46x = 99,262.66 × 40,100.42
  4. Step 4: Simplify right side
    71,929.46x = 3,980,474,356.32
  5. Step 5: Solve for x
    x = 3,980,474,356.32/71,929.46
  6. Step 6: Final answer
    x = 55,338.58

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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.