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Finding the Fourth Proportional to 92,940.71, 139,332.70 and 40,310.56

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Solution

The fourth proportional to 92,940.71, 139,332.70 and 40,310.56 is: 60,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,940.71 : 139,332.70 = 40,310.56 : x
  2. Step 2: Convert to fraction form
    92,940.71/139,332.70 = 40,310.56/x
  3. Step 3: Cross multiply
    92,940.71x = 139,332.70 × 40,310.56
  4. Step 4: Simplify right side
    92,940.71x = 5,616,578,714.20
  5. Step 5: Solve for x
    x = 5,616,578,714.20/92,940.71
  6. Step 6: Final answer
    x = 60,431.84

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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.