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Finding the Fourth Proportional to 69,578.86, 96,012.48 and 39,366.94

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Solution

The fourth proportional to 69,578.86, 96,012.48 and 39,366.94 is: 54,322.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,578.86 : 96,012.48 = 39,366.94 : x
  2. Step 2: Convert to fraction form
    69,578.86/96,012.48 = 39,366.94/x
  3. Step 3: Cross multiply
    69,578.86x = 96,012.48 × 39,366.94
  4. Step 4: Simplify right side
    69,578.86x = 3,779,717,539.41
  5. Step 5: Solve for x
    x = 3,779,717,539.41/69,578.86
  6. Step 6: Final answer
    x = 54,322.79

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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.