Home / 85,521.70-128,282.55-26,352.10

Finding the Fourth Proportional to 85,521.70, 128,282.55 and 26,352.10

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Solution

The fourth proportional to 85,521.70, 128,282.55 and 26,352.10 is: 39,528.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,521.70 : 128,282.55 = 26,352.10 : x
  2. Step 2: Convert to fraction form
    85,521.70/128,282.55 = 26,352.10/x
  3. Step 3: Cross multiply
    85,521.70x = 128,282.55 × 26,352.10
  4. Step 4: Simplify right side
    85,521.70x = 3,380,514,585.86
  5. Step 5: Solve for x
    x = 3,380,514,585.86/85,521.70
  6. Step 6: Final answer
    x = 39,528.15

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Similar ratio
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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.