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Finding the Fourth Proportional to 68,156.47, 102,151.81 and 36,488.71

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Solution

The fourth proportional to 68,156.47, 102,151.81 and 36,488.71 is: 54,688.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,156.47 : 102,151.81 = 36,488.71 : x
  2. Step 2: Convert to fraction form
    68,156.47/102,151.81 = 36,488.71/x
  3. Step 3: Cross multiply
    68,156.47x = 102,151.81 × 36,488.71
  4. Step 4: Simplify right side
    68,156.47x = 3,727,387,771.07
  5. Step 5: Solve for x
    x = 3,727,387,771.07/68,156.47
  6. Step 6: Final answer
    x = 54,688.69

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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.