Home / 55,135.78-76,086.96-29,985.28

Finding the Fourth Proportional to 55,135.78, 76,086.96 and 29,985.28

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Solution

The fourth proportional to 55,135.78, 76,086.96 and 29,985.28 is: 41,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,135.78 : 76,086.96 = 29,985.28 : x
  2. Step 2: Convert to fraction form
    55,135.78/76,086.96 = 29,985.28/x
  3. Step 3: Cross multiply
    55,135.78x = 76,086.96 × 29,985.28
  4. Step 4: Simplify right side
    55,135.78x = 2,281,488,799.95
  5. Step 5: Solve for x
    x = 2,281,488,799.95/55,135.78
  6. Step 6: Final answer
    x = 41,379.46

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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.