Home / 85,496.68-128,247.18-40,507.48

Finding the Fourth Proportional to 85,496.68, 128,247.18 and 40,507.48

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Solution

The fourth proportional to 85,496.68, 128,247.18 and 40,507.48 is: 60,762.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,496.68 : 128,247.18 = 40,507.48 : x
  2. Step 2: Convert to fraction form
    85,496.68/128,247.18 = 40,507.48/x
  3. Step 3: Cross multiply
    85,496.68x = 128,247.18 × 40,507.48
  4. Step 4: Simplify right side
    85,496.68x = 5,194,970,078.91
  5. Step 5: Solve for x
    x = 5,194,970,078.91/85,496.68
  6. Step 6: Final answer
    x = 60,762.24

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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.