Home / 74,731.36-103,166.10-51,778.59

Finding the Fourth Proportional to 74,731.36, 103,166.10 and 51,778.59

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Solution

The fourth proportional to 74,731.36, 103,166.10 and 51,778.59 is: 71,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,731.36 : 103,166.10 = 51,778.59 : x
  2. Step 2: Convert to fraction form
    74,731.36/103,166.10 = 51,778.59/x
  3. Step 3: Cross multiply
    74,731.36x = 103,166.10 × 51,778.59
  4. Step 4: Simplify right side
    74,731.36x = 5,341,795,193.80
  5. Step 5: Solve for x
    x = 5,341,795,193.80/74,731.36
  6. Step 6: Final answer
    x = 71,479.97

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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.