Home / 57,130.14-78,757.43-40,081.56

Finding the Fourth Proportional to 57,130.14, 78,757.43 and 40,081.56

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Solution

The fourth proportional to 57,130.14, 78,757.43 and 40,081.56 is: 55,254.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,130.14 : 78,757.43 = 40,081.56 : x
  2. Step 2: Convert to fraction form
    57,130.14/78,757.43 = 40,081.56/x
  3. Step 3: Cross multiply
    57,130.14x = 78,757.43 × 40,081.56
  4. Step 4: Simplify right side
    57,130.14x = 3,156,720,655.99
  5. Step 5: Solve for x
    x = 3,156,720,655.99/57,130.14
  6. Step 6: Final answer
    x = 55,254.91

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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.