Home / 57,131.53-85,665.25-39,140.09

Finding the Fourth Proportional to 57,131.53, 85,665.25 and 39,140.09

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Solution

The fourth proportional to 57,131.53, 85,665.25 and 39,140.09 is: 58,688.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,131.53 : 85,665.25 = 39,140.09 : x
  2. Step 2: Convert to fraction form
    57,131.53/85,665.25 = 39,140.09/x
  3. Step 3: Cross multiply
    57,131.53x = 85,665.25 × 39,140.09
  4. Step 4: Simplify right side
    57,131.53x = 3,352,946,018.58
  5. Step 5: Solve for x
    x = 3,352,946,018.58/57,131.53
  6. Step 6: Final answer
    x = 58,688.19

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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.