Home / 86,540.10-129,915.45-54,950.10

Finding the Fourth Proportional to 86,540.10, 129,915.45 and 54,950.10

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Solution

The fourth proportional to 86,540.10, 129,915.45 and 54,950.10 is: 82,492.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,540.10 : 129,915.45 = 54,950.10 : x
  2. Step 2: Convert to fraction form
    86,540.10/129,915.45 = 54,950.10/x
  3. Step 3: Cross multiply
    86,540.10x = 129,915.45 × 54,950.10
  4. Step 4: Simplify right side
    86,540.10x = 7,138,866,969.05
  5. Step 5: Solve for x
    x = 7,138,866,969.05/86,540.10
  6. Step 6: Final answer
    x = 82,492.01

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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.