Home / 85,966.20-128,949.30-23,636.70

Finding the Fourth Proportional to 85,966.20, 128,949.30 and 23,636.70

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Solution

The fourth proportional to 85,966.20, 128,949.30 and 23,636.70 is: 35,455.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,966.20 : 128,949.30 = 23,636.70 : x
  2. Step 2: Convert to fraction form
    85,966.20/128,949.30 = 23,636.70/x
  3. Step 3: Cross multiply
    85,966.20x = 128,949.30 × 23,636.70
  4. Step 4: Simplify right side
    85,966.20x = 3,047,935,919.31
  5. Step 5: Solve for x
    x = 3,047,935,919.31/85,966.20
  6. Step 6: Final answer
    x = 35,455.05

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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.