Home / 57,685.40-86,607.77-39,872.18

Finding the Fourth Proportional to 57,685.40, 86,607.77 and 39,872.18

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Solution

The fourth proportional to 57,685.40, 86,607.77 and 39,872.18 is: 59,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,685.40 : 86,607.77 = 39,872.18 : x
  2. Step 2: Convert to fraction form
    57,685.40/86,607.77 = 39,872.18/x
  3. Step 3: Cross multiply
    57,685.40x = 86,607.77 × 39,872.18
  4. Step 4: Simplify right side
    57,685.40x = 3,453,239,962.44
  5. Step 5: Solve for x
    x = 3,453,239,962.44/57,685.40
  6. Step 6: Final answer
    x = 59,863.33

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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.