Home / 57,186.47-78,945.21-38,077.55

Finding the Fourth Proportional to 57,186.47, 78,945.21 and 38,077.55

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Solution

The fourth proportional to 57,186.47, 78,945.21 and 38,077.55 is: 52,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,186.47 : 78,945.21 = 38,077.55 : x
  2. Step 2: Convert to fraction form
    57,186.47/78,945.21 = 38,077.55/x
  3. Step 3: Cross multiply
    57,186.47x = 78,945.21 × 38,077.55
  4. Step 4: Simplify right side
    57,186.47x = 3,006,040,181.04
  5. Step 5: Solve for x
    x = 3,006,040,181.04/57,186.47
  6. Step 6: Final answer
    x = 52,565.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.