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Finding the Fourth Proportional to 69,121.86, 95,403.72 and 45,234.69

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Solution

The fourth proportional to 69,121.86, 95,403.72 and 45,234.69 is: 62,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,121.86 : 95,403.72 = 45,234.69 : x
  2. Step 2: Convert to fraction form
    69,121.86/95,403.72 = 45,234.69/x
  3. Step 3: Cross multiply
    69,121.86x = 95,403.72 × 45,234.69
  4. Step 4: Simplify right side
    69,121.86x = 4,315,557,699.05
  5. Step 5: Solve for x
    x = 4,315,557,699.05/69,121.86
  6. Step 6: Final answer
    x = 62,434.05

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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.