Home / 78,379.17-117,553.02-38,380.92

Finding the Fourth Proportional to 78,379.17, 117,553.02 and 38,380.92

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Solution

The fourth proportional to 78,379.17, 117,553.02 and 38,380.92 is: 57,563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,379.17 : 117,553.02 = 38,380.92 : x
  2. Step 2: Convert to fraction form
    78,379.17/117,553.02 = 38,380.92/x
  3. Step 3: Cross multiply
    78,379.17x = 117,553.02 × 38,380.92
  4. Step 4: Simplify right side
    78,379.17x = 4,511,793,056.38
  5. Step 5: Solve for x
    x = 4,511,793,056.38/78,379.17
  6. Step 6: Final answer
    x = 57,563.67

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1.5x scale

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.