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Finding the Fourth Proportional to 76,908.12, 106,152.54 and 43,393.56

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Solution

The fourth proportional to 76,908.12, 106,152.54 and 43,393.56 is: 59,894.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,908.12 : 106,152.54 = 43,393.56 : x
  2. Step 2: Convert to fraction form
    76,908.12/106,152.54 = 43,393.56/x
  3. Step 3: Cross multiply
    76,908.12x = 106,152.54 × 43,393.56
  4. Step 4: Simplify right side
    76,908.12x = 4,606,336,613.64
  5. Step 5: Solve for x
    x = 4,606,336,613.64/76,908.12
  6. Step 6: Final answer
    x = 59,894.02

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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.