Home / 78,082.14-107,679.60-51,247.92

Finding the Fourth Proportional to 78,082.14, 107,679.60 and 51,247.92

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Solution

The fourth proportional to 78,082.14, 107,679.60 and 51,247.92 is: 70,673.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,082.14 : 107,679.60 = 51,247.92 : x
  2. Step 2: Convert to fraction form
    78,082.14/107,679.60 = 51,247.92/x
  3. Step 3: Cross multiply
    78,082.14x = 107,679.60 × 51,247.92
  4. Step 4: Simplify right side
    78,082.14x = 5,518,355,526.43
  5. Step 5: Solve for x
    x = 5,518,355,526.43/78,082.14
  6. Step 6: Final answer
    x = 70,673.72

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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.