Home / 75,787.36-113,713.80-40,686

Finding the Fourth Proportional to 75,787.36, 113,713.80 and 40,686

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Solution

The fourth proportional to 75,787.36, 113,713.80 and 40,686 is: 61,046.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,787.36 : 113,713.80 = 40,686 : x
  2. Step 2: Convert to fraction form
    75,787.36/113,713.80 = 40,686/x
  3. Step 3: Cross multiply
    75,787.36x = 113,713.80 × 40,686
  4. Step 4: Simplify right side
    75,787.36x = 4,626,559,666.80
  5. Step 5: Solve for x
    x = 4,626,559,666.80/75,787.36
  6. Step 6: Final answer
    x = 61,046.59

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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.