Home / 86,624.20-129,936.30-72,627.40

Finding the Fourth Proportional to 86,624.20, 129,936.30 and 72,627.40

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Solution

The fourth proportional to 86,624.20, 129,936.30 and 72,627.40 is: 108,941.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,624.20 : 129,936.30 = 72,627.40 : x
  2. Step 2: Convert to fraction form
    86,624.20/129,936.30 = 72,627.40/x
  3. Step 3: Cross multiply
    86,624.20x = 129,936.30 × 72,627.40
  4. Step 4: Simplify right side
    86,624.20x = 9,436,935,634.62
  5. Step 5: Solve for x
    x = 9,436,935,634.62/86,624.20
  6. Step 6: Final answer
    x = 108,941.10

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1.5x scale

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.