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Finding the Fourth Proportional to 69,879.60, 96,435 and 38,049.12

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Solution

The fourth proportional to 69,879.60, 96,435 and 38,049.12 is: 52,508.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,879.60 : 96,435 = 38,049.12 : x
  2. Step 2: Convert to fraction form
    69,879.60/96,435 = 38,049.12/x
  3. Step 3: Cross multiply
    69,879.60x = 96,435 × 38,049.12
  4. Step 4: Simplify right side
    69,879.60x = 3,669,266,887.20
  5. Step 5: Solve for x
    x = 3,669,266,887.20/69,879.60
  6. Step 6: Final answer
    x = 52,508.41

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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.