Home / 85,753.11-128,673.54-40,825.26

Finding the Fourth Proportional to 85,753.11, 128,673.54 and 40,825.26

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Solution

The fourth proportional to 85,753.11, 128,673.54 and 40,825.26 is: 61,258.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,753.11 : 128,673.54 = 40,825.26 : x
  2. Step 2: Convert to fraction form
    85,753.11/128,673.54 = 40,825.26/x
  3. Step 3: Cross multiply
    85,753.11x = 128,673.54 × 40,825.26
  4. Step 4: Simplify right side
    85,753.11x = 5,253,130,725.62
  5. Step 5: Solve for x
    x = 5,253,130,725.62/85,753.11
  6. Step 6: Final answer
    x = 61,258.78

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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.