Home / 76,952.20-115,428.30-66,584.20

Finding the Fourth Proportional to 76,952.20, 115,428.30 and 66,584.20

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Solution

The fourth proportional to 76,952.20, 115,428.30 and 66,584.20 is: 99,876.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,952.20 : 115,428.30 = 66,584.20 : x
  2. Step 2: Convert to fraction form
    76,952.20/115,428.30 = 66,584.20/x
  3. Step 3: Cross multiply
    76,952.20x = 115,428.30 × 66,584.20
  4. Step 4: Simplify right side
    76,952.20x = 7,685,701,012.86
  5. Step 5: Solve for x
    x = 7,685,701,012.86/76,952.20
  6. Step 6: Final answer
    x = 99,876.30

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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.