Home / 74,763.79-103,172.73-40,772.54

Finding the Fourth Proportional to 74,763.79, 103,172.73 and 40,772.54

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Solution

The fourth proportional to 74,763.79, 103,172.73 and 40,772.54 is: 56,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,763.79 : 103,172.73 = 40,772.54 : x
  2. Step 2: Convert to fraction form
    74,763.79/103,172.73 = 40,772.54/x
  3. Step 3: Cross multiply
    74,763.79x = 103,172.73 × 40,772.54
  4. Step 4: Simplify right side
    74,763.79x = 4,206,614,260.83
  5. Step 5: Solve for x
    x = 4,206,614,260.83/74,763.79
  6. Step 6: Final answer
    x = 56,265.40

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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.