Home / 86,178.50-129,267.79-27,018.78

Finding the Fourth Proportional to 86,178.50, 129,267.79 and 27,018.78

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Solution

The fourth proportional to 86,178.50, 129,267.79 and 27,018.78 is: 40,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,178.50 : 129,267.79 = 27,018.78 : x
  2. Step 2: Convert to fraction form
    86,178.50/129,267.79 = 27,018.78/x
  3. Step 3: Cross multiply
    86,178.50x = 129,267.79 × 27,018.78
  4. Step 4: Simplify right side
    86,178.50x = 3,492,658,446.96
  5. Step 5: Solve for x
    x = 3,492,658,446.96/86,178.50
  6. Step 6: Final answer
    x = 40,528.19

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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.