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Finding the Fourth Proportional to 84,007.40, 125,913.90 and 34,062.80

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Solution

The fourth proportional to 84,007.40, 125,913.90 and 34,062.80 is: 51,054.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,007.40 : 125,913.90 = 34,062.80 : x
  2. Step 2: Convert to fraction form
    84,007.40/125,913.90 = 34,062.80/x
  3. Step 3: Cross multiply
    84,007.40x = 125,913.90 × 34,062.80
  4. Step 4: Simplify right side
    84,007.40x = 4,288,979,992.92
  5. Step 5: Solve for x
    x = 4,288,979,992.92/84,007.40
  6. Step 6: Final answer
    x = 51,054.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.