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Finding the Fourth Proportional to 69,889.53, 96,444.27 and 39,670.86

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Solution

The fourth proportional to 69,889.53, 96,444.27 and 39,670.86 is: 54,743.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,889.53 : 96,444.27 = 39,670.86 : x
  2. Step 2: Convert to fraction form
    69,889.53/96,444.27 = 39,670.86/x
  3. Step 3: Cross multiply
    69,889.53x = 96,444.27 × 39,670.86
  4. Step 4: Simplify right side
    69,889.53x = 3,826,027,494.64
  5. Step 5: Solve for x
    x = 3,826,027,494.64/69,889.53
  6. Step 6: Final answer
    x = 54,743.93

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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.