Home / 77,268.80-115,878.62-39,824.12

Finding the Fourth Proportional to 77,268.80, 115,878.62 and 39,824.12

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Solution

The fourth proportional to 77,268.80, 115,878.62 and 39,824.12 is: 59,723.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,268.80 : 115,878.62 = 39,824.12 : x
  2. Step 2: Convert to fraction form
    77,268.80/115,878.62 = 39,824.12/x
  3. Step 3: Cross multiply
    77,268.80x = 115,878.62 × 39,824.12
  4. Step 4: Simplify right side
    77,268.80x = 4,614,764,068.31
  5. Step 5: Solve for x
    x = 4,614,764,068.31/77,268.80
  6. Step 6: Final answer
    x = 59,723.51

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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.