Home / 86,605.20-129,911.45-27,443.21

Finding the Fourth Proportional to 86,605.20, 129,911.45 and 27,443.21

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Solution

The fourth proportional to 86,605.20, 129,911.45 and 27,443.21 is: 41,165.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,605.20 : 129,911.45 = 27,443.21 : x
  2. Step 2: Convert to fraction form
    86,605.20/129,911.45 = 27,443.21/x
  3. Step 3: Cross multiply
    86,605.20x = 129,911.45 × 27,443.21
  4. Step 4: Simplify right side
    86,605.20x = 3,565,186,416.98
  5. Step 5: Solve for x
    x = 3,565,186,416.98/86,605.20
  6. Step 6: Final answer
    x = 41,165.96

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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.