Home / 57,530.72-86,111.40-30,839.60

Finding the Fourth Proportional to 57,530.72, 86,111.40 and 30,839.60

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Solution

The fourth proportional to 57,530.72, 86,111.40 and 30,839.60 is: 46,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,530.72 : 86,111.40 = 30,839.60 : x
  2. Step 2: Convert to fraction form
    57,530.72/86,111.40 = 30,839.60/x
  3. Step 3: Cross multiply
    57,530.72x = 86,111.40 × 30,839.60
  4. Step 4: Simplify right side
    57,530.72x = 2,655,641,131.44
  5. Step 5: Solve for x
    x = 2,655,641,131.44/57,530.72
  6. Step 6: Final answer
    x = 46,160.40

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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.