Home / 86,584.85-129,884.67-30,420.08

Finding the Fourth Proportional to 86,584.85, 129,884.67 and 30,420.08

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Solution

The fourth proportional to 86,584.85, 129,884.67 and 30,420.08 is: 45,632.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,584.85 : 129,884.67 = 30,420.08 : x
  2. Step 2: Convert to fraction form
    86,584.85/129,884.67 = 30,420.08/x
  3. Step 3: Cross multiply
    86,584.85x = 129,884.67 × 30,420.08
  4. Step 4: Simplify right side
    86,584.85x = 3,951,102,052.17
  5. Step 5: Solve for x
    x = 3,951,102,052.17/86,584.85
  6. Step 6: Final answer
    x = 45,632.72

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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.