Home / 80,135.31-120,262.02-38,015.51

Finding the Fourth Proportional to 80,135.31, 120,262.02 and 38,015.51

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Solution

The fourth proportional to 80,135.31, 120,262.02 and 38,015.51 is: 57,051.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,135.31 : 120,262.02 = 38,015.51 : x
  2. Step 2: Convert to fraction form
    80,135.31/120,262.02 = 38,015.51/x
  3. Step 3: Cross multiply
    80,135.31x = 120,262.02 × 38,015.51
  4. Step 4: Simplify right side
    80,135.31x = 4,571,822,023.93
  5. Step 5: Solve for x
    x = 4,571,822,023.93/80,135.31
  6. Step 6: Final answer
    x = 57,051.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.