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Finding the Fourth Proportional to 68,495.09, 102,701.57 and 28,465.79

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Solution

The fourth proportional to 68,495.09, 102,701.57 and 28,465.79 is: 42,681.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,495.09 : 102,701.57 = 28,465.79 : x
  2. Step 2: Convert to fraction form
    68,495.09/102,701.57 = 28,465.79/x
  3. Step 3: Cross multiply
    68,495.09x = 102,701.57 × 28,465.79
  4. Step 4: Simplify right side
    68,495.09x = 2,923,480,668.45
  5. Step 5: Solve for x
    x = 2,923,480,668.45/68,495.09
  6. Step 6: Final answer
    x = 42,681.61

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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.