Home / 85,495.24-128,245.05-40,506.06

Finding the Fourth Proportional to 85,495.24, 128,245.05 and 40,506.06

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Solution

The fourth proportional to 85,495.24, 128,245.05 and 40,506.06 is: 60,760.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,495.24 : 128,245.05 = 40,506.06 : x
  2. Step 2: Convert to fraction form
    85,495.24/128,245.05 = 40,506.06/x
  3. Step 3: Cross multiply
    85,495.24x = 128,245.05 × 40,506.06
  4. Step 4: Simplify right side
    85,495.24x = 5,194,701,487.47
  5. Step 5: Solve for x
    x = 5,194,701,487.47/85,495.24
  6. Step 6: Final answer
    x = 60,760.13

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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.