Home / 85,352.13-128,033.19-26,188.38

Finding the Fourth Proportional to 85,352.13, 128,033.19 and 26,188.38

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Solution

The fourth proportional to 85,352.13, 128,033.19 and 26,188.38 is: 39,284.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,352.13 : 128,033.19 = 26,188.38 : x
  2. Step 2: Convert to fraction form
    85,352.13/128,033.19 = 26,188.38/x
  3. Step 3: Cross multiply
    85,352.13x = 128,033.19 × 26,188.38
  4. Step 4: Simplify right side
    85,352.13x = 3,352,981,832.33
  5. Step 5: Solve for x
    x = 3,352,981,832.33/85,352.13
  6. Step 6: Final answer
    x = 39,284.10

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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.