Home / 74,762.20-103,174.31-40,772.54

Finding the Fourth Proportional to 74,762.20, 103,174.31 and 40,772.54

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Solution

The fourth proportional to 74,762.20, 103,174.31 and 40,772.54 is: 56,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,762.20 : 103,174.31 = 40,772.54 : x
  2. Step 2: Convert to fraction form
    74,762.20/103,174.31 = 40,772.54/x
  3. Step 3: Cross multiply
    74,762.20x = 103,174.31 × 40,772.54
  4. Step 4: Simplify right side
    74,762.20x = 4,206,677,961.71
  5. Step 5: Solve for x
    x = 4,206,677,961.71/74,762.20
  6. Step 6: Final answer
    x = 56,267.45

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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.