Home / 78,057.28-116,856.24-48,379.84

Finding the Fourth Proportional to 78,057.28, 116,856.24 and 48,379.84

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Solution

The fourth proportional to 78,057.28, 116,856.24 and 48,379.84 is: 72,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,057.28 : 116,856.24 = 48,379.84 : x
  2. Step 2: Convert to fraction form
    78,057.28/116,856.24 = 48,379.84/x
  3. Step 3: Cross multiply
    78,057.28x = 116,856.24 × 48,379.84
  4. Step 4: Simplify right side
    78,057.28x = 5,653,486,194.20
  5. Step 5: Solve for x
    x = 5,653,486,194.20/78,057.28
  6. Step 6: Final answer
    x = 72,427.40

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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.