Home / 71,943.78-99,282.41-40,112.68

Finding the Fourth Proportional to 71,943.78, 99,282.41 and 40,112.68

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Solution

The fourth proportional to 71,943.78, 99,282.41 and 40,112.68 is: 55,355.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,943.78 : 99,282.41 = 40,112.68 : x
  2. Step 2: Convert to fraction form
    71,943.78/99,282.41 = 40,112.68/x
  3. Step 3: Cross multiply
    71,943.78x = 99,282.41 × 40,112.68
  4. Step 4: Simplify right side
    71,943.78x = 3,982,483,541.96
  5. Step 5: Solve for x
    x = 3,982,483,541.96/71,943.78
  6. Step 6: Final answer
    x = 55,355.49

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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.