Home / 86,636.20-129,970.49-27,455.98

Finding the Fourth Proportional to 86,636.20, 129,970.49 and 27,455.98

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Solution

The fourth proportional to 86,636.20, 129,970.49 and 27,455.98 is: 41,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,636.20 : 129,970.49 = 27,455.98 : x
  2. Step 2: Convert to fraction form
    86,636.20/129,970.49 = 27,455.98/x
  3. Step 3: Cross multiply
    86,636.20x = 129,970.49 × 27,455.98
  4. Step 4: Simplify right side
    86,636.20x = 3,568,466,592.82
  5. Step 5: Solve for x
    x = 3,568,466,592.82/86,636.20
  6. Step 6: Final answer
    x = 41,189.10

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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.