Home / 57,130.64-78,758.12-40,082.06

Finding the Fourth Proportional to 57,130.64, 78,758.12 and 40,082.06

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Solution

The fourth proportional to 57,130.64, 78,758.12 and 40,082.06 is: 55,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,130.64 : 78,758.12 = 40,082.06 : x
  2. Step 2: Convert to fraction form
    57,130.64/78,758.12 = 40,082.06/x
  3. Step 3: Cross multiply
    57,130.64x = 78,758.12 × 40,082.06
  4. Step 4: Simplify right side
    57,130.64x = 3,156,787,691.33
  5. Step 5: Solve for x
    x = 3,156,787,691.33/57,130.64
  6. Step 6: Final answer
    x = 55,255.60

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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.