Home / 78,723.72-108,634.64-44,727.48

Finding the Fourth Proportional to 78,723.72, 108,634.64 and 44,727.48

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Solution

The fourth proportional to 78,723.72, 108,634.64 and 44,727.48 is: 61,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,723.72 : 108,634.64 = 44,727.48 : x
  2. Step 2: Convert to fraction form
    78,723.72/108,634.64 = 44,727.48/x
  3. Step 3: Cross multiply
    78,723.72x = 108,634.64 × 44,727.48
  4. Step 4: Simplify right side
    78,723.72x = 4,858,953,464.27
  5. Step 5: Solve for x
    x = 4,858,953,464.27/78,723.72
  6. Step 6: Final answer
    x = 61,721.59

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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.