Home / 85,736.33-128,604.51-35,789.18

Finding the Fourth Proportional to 85,736.33, 128,604.51 and 35,789.18

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Solution

The fourth proportional to 85,736.33, 128,604.51 and 35,789.18 is: 53,683.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,736.33 : 128,604.51 = 35,789.18 : x
  2. Step 2: Convert to fraction form
    85,736.33/128,604.51 = 35,789.18/x
  3. Step 3: Cross multiply
    85,736.33x = 128,604.51 × 35,789.18
  4. Step 4: Simplify right side
    85,736.33x = 4,602,649,957.20
  5. Step 5: Solve for x
    x = 4,602,649,957.20/85,736.33
  6. Step 6: Final answer
    x = 53,683.78

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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.