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Finding the Fourth Proportional to 69,670.86, 96,148.04 and 39,455.53

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Solution

The fourth proportional to 69,670.86, 96,148.04 and 39,455.53 is: 54,449.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,670.86 : 96,148.04 = 39,455.53 : x
  2. Step 2: Convert to fraction form
    69,670.86/96,148.04 = 39,455.53/x
  3. Step 3: Cross multiply
    69,670.86x = 96,148.04 × 39,455.53
  4. Step 4: Simplify right side
    69,670.86x = 3,793,571,876.66
  5. Step 5: Solve for x
    x = 3,793,571,876.66/69,670.86
  6. Step 6: Final answer
    x = 54,449.91

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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.