Home / 86,322.60-129,515.04-30,171

Finding the Fourth Proportional to 86,322.60, 129,515.04 and 30,171

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Solution

The fourth proportional to 86,322.60, 129,515.04 and 30,171 is: 45,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,322.60 : 129,515.04 = 30,171 : x
  2. Step 2: Convert to fraction form
    86,322.60/129,515.04 = 30,171/x
  3. Step 3: Cross multiply
    86,322.60x = 129,515.04 × 30,171
  4. Step 4: Simplify right side
    86,322.60x = 3,907,598,271.84
  5. Step 5: Solve for x
    x = 3,907,598,271.84/86,322.60
  6. Step 6: Final answer
    x = 45,267.38

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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.