Home / 76,808.85-115,628.22-69,084.50

Finding the Fourth Proportional to 76,808.85, 115,628.22 and 69,084.50

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Solution

The fourth proportional to 76,808.85, 115,628.22 and 69,084.50 is: 103,999.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,808.85 : 115,628.22 = 69,084.50 : x
  2. Step 2: Convert to fraction form
    76,808.85/115,628.22 = 69,084.50/x
  3. Step 3: Cross multiply
    76,808.85x = 115,628.22 × 69,084.50
  4. Step 4: Simplify right side
    76,808.85x = 7,988,117,186.45
  5. Step 5: Solve for x
    x = 7,988,117,186.45/76,808.85
  6. Step 6: Final answer
    x = 103,999.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.