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Finding the Fourth Proportional to 68,336.94, 102,509.73 and 28,888.86

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Solution

The fourth proportional to 68,336.94, 102,509.73 and 28,888.86 is: 43,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,336.94 : 102,509.73 = 28,888.86 : x
  2. Step 2: Convert to fraction form
    68,336.94/102,509.73 = 28,888.86/x
  3. Step 3: Cross multiply
    68,336.94x = 102,509.73 × 28,888.86
  4. Step 4: Simplify right side
    68,336.94x = 2,961,389,238.61
  5. Step 5: Solve for x
    x = 2,961,389,238.61/68,336.94
  6. Step 6: Final answer
    x = 43,335.12

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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.