Home / 76,864.41-115,331.64-39,450.75

Finding the Fourth Proportional to 76,864.41, 115,331.64 and 39,450.75

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Solution

The fourth proportional to 76,864.41, 115,331.64 and 39,450.75 is: 59,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,864.41 : 115,331.64 = 39,450.75 : x
  2. Step 2: Convert to fraction form
    76,864.41/115,331.64 = 39,450.75/x
  3. Step 3: Cross multiply
    76,864.41x = 115,331.64 × 39,450.75
  4. Step 4: Simplify right side
    76,864.41x = 4,549,918,922.82
  5. Step 5: Solve for x
    x = 4,549,918,922.82/76,864.41
  6. Step 6: Final answer
    x = 59,194.10

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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.